Question 1

Evaluate the expression for the given value of $x$.
-$(-4 x)^{2}, x=4$

Accepted Answer

A)  -256 
B)  256 
C)  64 
D)  -64 
A)  -256 
B)  256 
C)  64 
D)  -64

Question 2

Simplify.
-$\frac{7 a}{11 a b}$

Accepted Answer

A)  $\frac{7 b}{11}$ 
B)  $\frac{7}{11 b}$ 
C)  $\frac{1}{11 b}$ 
D)  $\frac{7 \mathrm{a}}{11}$ 
A)  $\frac{7 b}{11}$ 
B)  $\frac{7}{11 b}$ 
C)  $\frac{1}{11 b}$ 
D)  $\frac{7 \mathrm{a}}{11}$

Question 3

Collect like terms.
-$3.2 a+7.9 b-2.1 a-3.8 b$

Accepted Answer

A)  $1.1 \mathrm{a}+4.1 \mathrm{~b}$ 
B)  $1.1 \mathrm{a}+11.7 \mathrm{~b}$ 
C)  $5.3 a+11.7 b$ 
D)  $-1.1 \mathrm{a}+4.1 \mathrm{~b}$ 
A)  $1.1 \mathrm{a}+4.1 \mathrm{~b}$ 
B)  $1.1 \mathrm{a}+11.7 \mathrm{~b}$ 
C)  $5.3 a+11.7 b$ 
D)  $-1.1 \mathrm{a}+4.1 \mathrm{~b}$

Question 4

Translate to an algebraic expression.
-Alex had y dollars before spending $\$ 39.50$ for a book. How much did he have after the purchase?

Accepted Answer

A)  $\$ 39.50-y$ 
B)  y $-\$ 39.50$ 
C)  $\$ 39.50+y$ 
D)  $\$ 39.50 \mathrm{y}$ 
A)  $\$ 39.50-y$ 
B)  y $-\$ 39.50$ 
C)  $\$ 39.50+y$ 
D)  $\$ 39.50 \mathrm{y}$

Question 5

Insert  to write a true statement.
--10 ____ 0

Accepted Answer

A) $-10>0$ B) $-10<0$ A) $-10>0$ B) $-10<0$

Question 6

Simplify.
-$4[16+4(5+5)]$

Accepted Answer

A)  164 
B)  56 
C)  800 
D)  224 
A)  164 
B)  56 
C)  800 
D)  224

Question 7

Evaluate $-x$ for the given value of $x$.
-$x=-3.59$

Accepted Answer

A)  -3.59 
B)  3 
C)  0 
D)  3.59 
A)  -3.59 
B)  3 
C)  0 
D)  3.59

Question 8

Simplify.
-$-2.1-(-13.1)-(-8.7)$

Accepted Answer

A)  -23.9 
B)  -19.7 
C)  -6.5 
D)  19.7 
A)  -23.9 
B)  -19.7 
C)  -6.5 
D)  19.7

Question 9

Solve the problem.
-In Smithville, there were 225 teachers in 1990 and 321 teachers in 2000. Find the percent of increase in the number of teachers in Smithville during this time period. Round to the nearest tenth of a percent.

Accepted Answer

A)  $46.9 \%$ 
B)  $51.2 \%$ 
C)  $42.7 \%$ 
D)  $29.9 \%$ 
A)  $46.9 \%$ 
B)  $51.2 \%$ 
C)  $42.7 \%$ 
D)  $29.9 \%$

Question 10

Write an equivalent expression. Use an associative law.
-$(x+9)+y$

Accepted Answer

A)  $x+(9+y)$ 
B)  $x(9+y)$ 
C)  $(9+x)+y$ 
D)  $y+(x+9)$ 
A)  $x+(9+y)$ 
B)  $x(9+y)$ 
C)  $(9+x)+y$ 
D)  $y+(x+9)$

Question 11

Multiply.
-$-0.9 \cdot 7.11$

Accepted Answer

A)  -6.399 
B)  6.21 
C)  6.399 
D)  8.01 
A)  -6.399 
B)  6.21 
C)  6.399 
D)  8.01

Question 12

Evaluate $-(-x)$ for the given value of $x$.
-$\mathrm{x}=174$

Accepted Answer

A)  0 
B)  174 
C)  -174 
D)  $\frac{1}{174}$ 
A)  0 
B)  174 
C)  -174 
D)  $\frac{1}{174}$

Question 13

Simplify.
-$15+(-18)+13+(-3)+8+(-20)$

Accepted Answer

A)  -31 
B)  -5 
C)  -77 
D)  5 
A)  -31 
B)  -5 
C)  -77 
D)  5

Question 14

Subtract.
-$-0.57-8$

Accepted Answer

A)  -7.43 
B)  -8.57 
C)  8.57 
D)  7.43 
A)  -7.43 
B)  -8.57 
C)  8.57 
D)  7.43

Question 15

Subtract.
-$-11-(-11)$

Accepted Answer

A)  -11 
B)  0 
C)  11 
D)  1 
A)  -11 
B)  0 
C)  11 
D)  1

Question 16

Provide an appropriate response.
-Choose the expression that is equivalent to the following: $(8 x+4 y)\left(9 y^{2}\right)$

Accepted Answer

A)  $(8 x)+(4 y)\left(9 y^{2}\right)$ 
B)  $8 x+\left(4 y+9 y^{2}\right)$ 
C)  $\left(8 x+9 y^{2}\right)(4 y)$ 
D)  $\left(9 y^{2}\right)(8 x+4 y)$ 
A)  $(8 x)+(4 y)\left(9 y^{2}\right)$ 
B)  $8 x+\left(4 y+9 y^{2}\right)$ 
C)  $\left(8 x+9 y^{2}\right)(4 y)$ 
D)  $\left(9 y^{2}\right)(8 x+4 y)$

Question 17

Multiply.
-$\frac{1}{5} \cdot \frac{3}{4}$

Accepted Answer

A)  $\frac{15}{4}$ 
B)  $\frac{4}{9}$ 
C)  $\frac{20}{3}$ 
D)  $\frac{3}{20}$ 
A)  $\frac{15}{4}$ 
B)  $\frac{4}{9}$ 
C)  $\frac{20}{3}$ 
D)  $\frac{3}{20}$

Question 18

Find an equivalent expression without parentheses.
-$-(-8 x+15 y-17 z)$

Accepted Answer

A)  $8 x-15 y+17 z$ 
B)  $8 x+15 y-17 z$ 
C)  $-8 x+15 y-17 z$ 
D)  $8 x-15 y-17 z$ 
A)  $8 x-15 y+17 z$ 
B)  $8 x+15 y-17 z$ 
C)  $-8 x+15 y-17 z$ 
D)  $8 x-15 y-17 z$

Question 19

Substitute to find the value of the expression.
-In one store, bananas cost 60 cents per pound. The cost, in dollars, of $x$ pounds of bananas is $0.6 x$. What is the cost of 1.8 pounds of bananas?

Accepted Answer

A)  $\$ 1.08$ 
B)  $\$ 0.30$ 
C)  $\$ 1.28$ 
D)  $\$ 3.00$ 
A)  $\$ 1.08$ 
B)  $\$ 0.30$ 
C)  $\$ 1.28$ 
D)  $\$ 3.00$

Question 20

Multiply.
-$\frac{8}{7}(a-b+7)$

Accepted Answer

A)  $\frac{8}{7} a-b+7$ 
B)  $\frac{8}{7} a-\frac{8}{7} b+7$ 
C)  $\frac{8}{7} a-\frac{8}{7} b+8$ 
D)  $\frac{8}{7} a+\frac{8}{7} b+56$ 
A)  $\frac{8}{7} a-b+7$ 
B)  $\frac{8}{7} a-\frac{8}{7} b+7$ 
C)  $\frac{8}{7} a-\frac{8}{7} b+8$ 
D)  $\frac{8}{7} a+\frac{8}{7} b+56$

Evaluate the expression for the given value of $x$ . - $(-4 x)^{2}, x=4$

Simplify. - $\frac{7 a}{11 a b}$

Collect like terms. - $3.2 a+7.9 b-2.1 a-3.8 b$

Translate to an algebraic expression. -Alex had y dollars before spending $\$ 39.50$ for a book. How much did he have after the purchase?

Insert $<$ or $>$ to write a true statement. --10 ____ 0

Simplify. - $4[16+4(5+5)]$

Evaluate $-x$ for the given value of $x$ . - $x=-3.59$

Simplify. - $-2.1-(-13.1)-(-8.7)$

Solve the problem. -In Smithville, there were 225 teachers in 1990 and 321 teachers in 2000. Find the percent of increase in the number of teachers in Smithville during this time period. Round to the nearest tenth of a percent.

Write an equivalent expression. Use an associative law. - $(x+9)+y$

Multiply. - $-0.9 \cdot 7.11$

Evaluate $-(-x)$ for the given value of $x$ . - $\mathrm{x}=174$

Simplify. - $15+(-18)+13+(-3)+8+(-20)$

Subtract. - $-0.57-8$

Subtract. - $-11-(-11)$

Provide an appropriate response. -Choose the expression that is equivalent to the following: $(8 x+4 y)\left(9 y^{2}\right)$

Multiply. - $\frac{1}{5} \cdot \frac{3}{4}$

Find an equivalent expression without parentheses. - $-(-8 x+15 y-17 z)$

Substitute to find the value of the expression. -In one store, bananas cost 60 cents per pound. The cost, in dollars, of $x$ pounds of bananas is $0.6 x$ . What is the cost of 1.8 pounds of bananas?

Multiply. - $\frac{8}{7}(a-b+7)$

Whole Numbers

Fraction Notation

Decimal Notation

Percent Notation

Data, Graphs, and Statistics

Geometry

Solving Equations and Inequalities

Graphs of Linear Equations

Polynomials: Operations

Polynomials: Factoring

Rational Expressions and Equations

Systems of Equations

Radical Expressions and Equations

Quadratic Equations

Converting Units of Measurement

Filters

Exam 7: Introduction to Real Numbers and Algebraic Expressions

Evaluate the expression for the given value of xxx . - (−4x)2,x=4(-4 x)^{2}, x=4(−4x)2,x=4

Simplify. - 7a11ab\frac{7 a}{11 a b}11ab7a​

Collect like terms. - 3.2a+7.9b−2.1a−3.8b3.2 a+7.9 b-2.1 a-3.8 b3.2a+7.9b−2.1a−3.8b

Translate to an algebraic expression. -Alex had y dollars before spending $39.50\$ 39.50$39.50 for a book. How much did he have after the purchase?

Insert <<< or >>> to write a true statement. --10 ____ 0

Simplify. - 4[16+4(5+5)]4[16+4(5+5)]4[16+4(5+5)]

Evaluate −x-x−x for the given value of xxx . - x=−3.59x=-3.59x=−3.59

Simplify. - −2.1−(−13.1)−(−8.7)-2.1-(-13.1)-(-8.7)−2.1−(−13.1)−(−8.7)