Modeling with Polynomial Functions: Polynomial Functions — Test

Question 1

Which statement describes the graph of this polynomial function? f of x is equal to x to the 5th power minus 6 x to the 4th power plus 9 x cubed

Revolt · Accepted Answer

The graph crosses the x -axis at x is equal to 0 and touches the x -axis at x is equal to 3 .

Question 2

Which equation is quadratic in form?

Revolt · Accepted Answer

6 x to the 4th power plus 7 x squared minus 3 is equal to 0

Question 3

Which table describes the behavior of the graph of f of x is equal to 2 x cubed minus 26 x minus 24 ?

Revolt · Accepted Answer

Table with 2 columns and 5 rows.Row 1: Column 1, 'Interval'; Column 2, 'Relation of graph to x-axis' Row 2: Column 1, 'open paren negative infinity comma negative 3 close paren'; Column 2, 'Below' Row 3: Column 1, 'open paren negative 3 comma negative 1 close paren'; Column 2, 'Above' Row 4: Column 1, '(−1, 4)'; Column 2, 'Below' Row 5: Column 1, '(4, ∞)'; Column 2, 'Above'

Question 4

The price that a company charged for a basketball hoop is given by the equation 50 minus 5 x squared where x is the number of hoops that are produced, in millions. It costs the company 30 dollars to make each basketball hoop. The company recently reduced its production to 1 million hoops but maintained its profit of 15 million dollars. Approximately how many basketball hoops did the company previously produce to make the same profit?

Revolt · Accepted Answer

1 point 3 million hoops

Question 5

Let A , b , and c be real numbers where A is not equal to b is not equal to c is not equal to 0 Which of the following functions could represent the graph?

Revolt · Accepted Answer

f of x is equal to x squared open paren x minus A close paren squared open paren x minus b close paren to the 4th power open paren x minus c close paren

Modeling with Polynomial Functions: Polynomial Functions — Test Answers

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