Practice Exam Answers

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What is the sum of 12 minus 5 i and negative 3 plus 4 i ?

negative 16 plus 63 i

9 minus i

15 minus 9 i

9 minus 9 i

The number of rows in an auditorium can be represented by the function f of x is equal to 80 x The number of seats in each row can be represented by the function g of x is equal to x plus 7 Which function represents the total number of seats, h of x is equal to f x g x ?

h of x is equal to 80 x squared plus 560

h of x is equal to 80 x squared plus 560 x

h of x is equal to 80 x plus 560

h of x is equal to 136 x

For which value of m does the graph of y is equal to 18 x squared plus m x plus 2 have exactly one x -intercept?

The variables cap x , cap y , and cap z represent polynomials where cap x is equal to A , cap y is equal to 3 A minus 5 , and cap z is equal to A squared plus 2 What is cap x squared cap y minus cap z in simplest form?

2 A squared minus 5 A minus 2

3 A cubed minus 6 A squared minus 2

negative 3 A cubed minus 2

negative 3 A squared minus 2

A rectangle’s length is 5 inches more than twice its width. Its area is 50 square inches. Which equation can be used to find its width, w ?

2 w open paren 2 w plus 5 close paren is equal to 50

2 w open paren w plus 5 close paren is equal to 50

w times open paren w plus 5 close paren is equal to 50

w times open paren 2 w plus 5 close paren is equal to 50

What is the value of i raised to the 20 plus 1 power ?

negative 1

negative i

If f of x is equal to 1 half lfloor x rfloor , what is f of 7 point 6 ?

3 point 8

3 point 5

Which is a factor of f of x is equal to 60 x to the 4th power plus 86 x cubed minus 46 x squared minus 43 x plus 8 ? Use the Rational Root Theorem to help you find your answer.

6 x minus 1

8 x plus 5

5 x minus 8

x minus 6

Which equation represents a graph with a vertex at open paren 1 comma negative 6 close paren ?

y is equal to 3 x squared minus 3 x minus 6

y is equal to 3 x squared plus 6 x minus 3

y is equal to 3 x squared minus 8 x minus 1

y is equal to 3 x squared minus 6 x minus 3

What is the rate of increase for the function f of x is equal to 1 third times open paren cube root of 24 close paren raised to the 2 x power ?

1 third

4 cube root of 9

2 cube root of 3

In triangle QRS , QR is equal to 8 and RS is equal to 5 Which expresses all possible lengths of side QS ?

5 is less than QS comma QS is less than 8

3 is less than QS comma QS is less than 13

QS is greater than 13

QS is equal to 13

The solution to an inequality is represented by the number line. Expand Image How can this same solution be written using set-builder notation?

Answer:

{x|x>3}

Which is the graph of g of x ? g of x is equal to 3 when x is less than 2; g of x is equal to negative x over 2 plus 2 when negative 2 is less than or equal to x and x is less than 2; g of x is equal to 2 x minus 3 when x is greater than or equal to 2

Image with description On a coordinate plane, a piecewise function has 3 connecting lines. The first line starts at (negative 5 comma 3) and goes horizontally to (negative 2 comma 3). The second line goes from (negative 2 comma 3) down to (2 comma negative 5). The third line starts at (2 comma negative 5) and goes up to (5 comma 1).

Image with description On a coordinate plane, a piecewise function has 3 lines. The first line starts at (negative 5 comma 3) and continues horizontally to (negative 2 comma 3). The second line has a closed circle at (negative 2 comma 2) and goes down to a closed circle at (2 comma 0). The third line has a closed circle at (2 comma 1) and goes up through (3 comma 3).

Image with description On a coordinate plane, a piecewise function has 3 connecting lines. The first line starts at (negative 5 comma 3) and goes horizontally to (negative 2 comma 3). The second line goes from (negative 2 comma 3) down to (2 comma 1). The third line starts at (2 comma 1) and goes up through (3 comma 3).

Mrs. Ishimitsu is installing a rubber bumper around the edge of her coffee table. The dimensions of the rectangular table are 2 x squared minus 16 feet and negative x squared plus 4 x plus 1 feet. Which expression represents the total perimeter of the table, and if x is equal to 3 , what is the length of the entire rubber bumper?

x squared plus 4 x minus 15 ; 3 feet

x squared plus 4 x minus 15 ; 6 feet

2 x squared plus 8 x minus 30 ; 12 feet

2 x squared plus 8 x minus 30 ; 6 feet

Which diagram shows lines that must be parallel lines cut by a transversal?

Image with description Parallel lines are cut by a transversal. The first line intersecting the transversal creates 4 angles, the top right angle is labeled as 91 degrees. The second line intersecting the transversal creates 4 angles, the bottom right angle is labeled as 91 degrees.

Image with description Parallel lines are cut by a transversal. The first line intersecting the transversal creates 4 angles, the top right angle is labeled as 89 degrees, and the bottom right angle is labeled as 91 degrees.

Image with description Parallel lines are cut by a transversal. The first line intersecting the transversal creates 4 angles, the top right angle is labeled as 91 degrees, and the bottom left angle is labeled as 91 degrees.

Image with description Parallel lines are cut by a transversal. The first line intersecting the transversal creates 4 angles, the bottom right angle is labeled as 91 degrees. The second line intersects the transversal creating 4 angles, the top right angle is labeled as 89 degrees.

What is a solution to open paren x plus 6 close paren times open paren x plus 2 close paren is equal to 60 ?

x is equal to negative 6

x is equal to negative 4

x is equal to 4

x is equal to 12

What is m angle PHJ ?

120 degrees

160 degrees

140 degrees

100 degrees

In triangle ABC , BG is equal to 24 mm. What is the length of segment GE ?

12 mm

48 mm

24 mm

36 mm

What is m angle ABC ?

m angle ABC is equal to 67 degrees

m angle ABC is equal to 60 degrees

m angle ABC is equal to 120 degrees

m angle ABC is equal to 127 degrees

Which type of function is represented by the table of values?

exponential

linear

square root

quadratic

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