Equations and Expressions Review

Expressions & Equations Review

Multiple Choice

$$3^2+12\div3$$  

• 13

• 6

• 7

• 14

Multiple Choice

$$4^2+10\div2$$  

• 9

• 13

• 9

• 21

Multiple Choice

$$4\left(2^3-1\right)$$  

• 20

• 28

• 23

• 11

Multiple Choice

$$5\left(3^3-7\right)$$  

• -5

• 10

• 100

• 80

Multiple Choice

$$\left(\frac{1}{3}+\frac{1}{6}\right)\times4$$  

• 2

• 4

• $$\frac{8}{9}$$  

• $$1\ \frac{1}{2}$$  

Multiple Choice

$$\left(\frac{1}{4}+\frac{1}{2}\right)\times8$$  

• 6

• 4

• $$2\ \frac{2}{3}$$  
  

• $$1\ \frac{1}{2}$$  

Multiple Choice

$$6\ +\ 3\ \div\frac{1}{2}\times4$$  

• 16

• 18

• 30

• 20

Multiple Choice

$$7\ +\ 2\ \div\frac{1}{4}\times2$$  

• 16

• 30

• 11

• 23

Multiple Choice

$$12w\ +\ 4\$$  Evaluate for  $$w\ =\ \frac{1}{2}$$  

• 16

• $$16\ \frac{1}{2}$$  

• 28

• 10

Multiple Choice

$$9w\ +\ 5\$$  Evaluate for  $$w\ =\ \frac{1}{3}$$  

• 8

• $$14\ \frac{1}{3}$$  

• 14

• 32

Multiple Choice

Simplify $$3x\ +\ 4y\ +\ 5x$$  

• $$12xy$$  

• $$15x\ +\ 4y$$  

• $$8x\ +\ 4y$$  

• $$60xy$$  

Multiple Choice

Simplify $$5x\ +\ 6y\ +\ 7x$$  

• $$18xy$$  

• $$12x\ +\ 6y$$  

• $$11x\ +\ 7y$$  

• $$210xy$$  

Multiple Choice

$$4\left(3x\ +5y\right)$$  

Simplify

• $$12x\ +\ 20y$$  

• $$12x\ +\ 5y$$  

• $$4\left(8xy\right)$$  

• $$7x\ +\ 9y$$  

Multiple Choice

$$5\left(2x\ +3y\right)$$  

Simplify

• $$7x\ +\ 8y$$  

• $$10x\ +\ 15y$$  

• $$5\left(5xy\right)$$  

• $$7x\ +\ 8y$$  

Multiple Choice

Solve the equation: $$3.5\ =\ x\ -2.4$$  

• $$x\ =\ 1.1$$  

• $$x\ =\ -1.1$$  

• $$x\ =\ 5.9$$  

• $$x\ =\ -5.9$$  

Multiple Choice

Solve the equation: $$4.2\ =\ x\ -3.1$$  

• $$x\ =\ 1.1$$  

• $$x\ =\ -1.1$$  

• $$x\ =\ 7.3$$  

• $$x\ =\ -7.3$$  

Multiple Choice

For summer vacation, Bob needs bathing suits and flip flops:

bathing suits, b, for $12 each, and flip flops, f, for $8 each.

Write an equation for the total cost, C, of the supplies using the variables b and f.

• $$C\ =\ 12b\ +\ 8f$$

• $$C\ =\ 12f\ +\ 8b$$

• $$C\ =\ 20bf$$

• $$C\ =\ 12b\ -\ 8f$$

Multiple Choice

Evaluate for b = 3  and f = 2  $$C\ =\ 12b\ +\ 8f$$  

• C = 205

• C = 25

• C = 52

• 48

Multiple Choice

For winter vacation, Bob needs sweaters and gloves:

sweaters, s, for $20 each, and gloves, g, for $6 each.

Write an equation for the total cost, C, of the supplies using the variables s and g.

• $$C\ =\ 20s\ +\ 6g$$

• $$C\ =\ 20g\ +\ 6s$$

• $$C\ =\ 26sg$$

• $$C\ =\ 20s\ -\ 6g$$

Multiple Choice

Evaluate for s = 4  and g = 2  $$C\ =\ 20s\ +\ 6g$$  

• C = 960

• C = 266

• C = 92

• C = 32