AnswersPre-Algebra - MA3119 A Distance LearningWriting and Evaluating Expressions

Writing and Evaluating Expressions — Unit test Answers

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1
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Sylvia translated the phrase into an algebraic expression and then evaluated it for . “the square of a number increased by 9”What is the value she should get?

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A
2 n minus 9 = 1
Option A
B
n squared minus 9 = 16
Option B
C
2 n + 9 = 19
Option C
D
n squared + 9 = 34
Option D
2
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Noni is looking for the sum of a number, n, and 21.What is the sum Noni is looking for if ?

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Answer not available
3

Thomas wrote the expanded form of below.Which statement is true?

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A
Thomas wrote the expanded form correctly.
B
Thomas should have multiplied 5 times 4.
C
Thomas should have multiplied the base by itself four times.
D
Thomas should have multiplied the exponent by 5.
4

Which scenario could be represented by the algebraic expression ?

Question illustration
A
Ahmed wants to know how much money he would make after 12 hours of work.
B
Ahmed wants to know the height of a building if each floor is 12 feet high.
C
Ahmed wants to know how many half-inch pieces are in a foot.
D
Ahmed wants to know how many floors are in an office building when each floor is 12 feet high.
5

Which phrases can be represented by the expression ? Check all that apply.

Question illustration
A
the quotient of thirty and a number
B
the product of thirty and a number
C
thirty divided by a number
D
the quotient of a number and thirty
E
a number divided by thirty
F
the product of a number and thirty
6

Muriel translated the phrase below into an algebraic expression and then evaluated it for . the product of a number and 8Which of the following contains the correct expression and value?

Question illustration
A
8 + n = 12
Option A
B
StartFraction 8 Over n EndFraction = 2
Option B
C
8 n = 32
Option C
D
8 minus n = 4
Option D
7

What is the value of the expression “three less than the quotient of ten and a number, increased by six” when n = 2?

A
2
B
mc022-4.jpg
Option B
C
8
D
mc022-5.jpg
Option D
8

Collin is substituting and to determine if the two expressions are equivalent. Which statement is true?

Question illustration
A
Both expressions are equivalent to 11 when .
Option A
B
Both expressions are equivalent to 33 when .
Option B
C
Both expressions are equivalent to 23 when .
Option C
D
The expressions are not equivalent.
9

A sheet of origami paper is in the shape of a square with a side length of 7 inches, as shown. What is the area of the sheet of origami paper?Use the formula for the area of a square, , where A represents the area and s represents the side length.

Question illustration
A
14
Option A
B
28
Option B
C
49
Option C
D
98
Option D
10

Which description is paired with its correct expression?

A
two less than the quotient of a number cubed and four, increased by eight;
Option A
B
six times the difference of five and a number squared;
Option B
C
three more than the quotient of nine and a number cubed, decreased by two;
Option C
D
twice the difference of a number squared and three;
Option D
11

The isosceles triangle has two sides with the same length. The base is one-half the length of a side. The expression which represents the perimeter, the distance around the triangle, is . What is the value of this expression if ?

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Answer not available
12

Chris is checking to determine if the expressions and are equivalent. When , he correctly finds that both expressions have a value of 8. When , he correctly evaluates the first expression to find that .What is the value of the second expression when , and are the two expressions equivalent?

Question illustration
A
The value of the second expression is 8, so the expressions are equivalent.
B
The value of the second expression is 10, so the expressions are equivalent.
C
The value of the second expression is 12, so the expressions are not equivalent.
D
The value of the second expression is 16, so the expressions are not equivalent.
13

Which description can be written as the expression ?

Question illustration
A
Hasaan wants to know how much savings is left in his account if he withdraws fifteen dollars.
B
Hasaan wants to know how many fifteen-dollar tickets he has to sell to make forty dollars.
C
Hasaan wants to know how much money he would have after forty hours of work if fifteen dollars is taken out of his pay for taxes.
D
Hasaan wants to know how many fifteen-foot floors are in a building that is forty-feet tall.
14

What is written in expanded form?

Question illustration
A
4 + 4 + 4 + 4 + 4 + 4
Option A
B
4 times 4 times 4 times 4 times 4 times 4
Option B
C
6 + 6 + 6 + 6
Option C
D
6 times 6 times 6 times 6
Option D
15

Ryan is looking for the sum of the cube of a number, n, and 16.What is the sum Ryan is looking for if ?

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Answer not available

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