Quiz #1 (3.3-3.4)

Write an equation given the word sentence:

The product of a number and 7 is -19

• 7x = -19

• $\frac{x}{7}\ =\ -19$

• 1/7 = x

• x - 7 = 19

Solve:

y + 9 = -8

• -1

• 17

• 1

• -17

Bert makes a profit of $320. This is $45 less than his friend's profit. Write and solve an equation to find his friend's profit, p.

• 45 = p - 320 ; p = 275

• 320 = p + 45 ; p = 365

• 320 = p - 45 ; p = 365

• 320 = p - 45 ; p = 275

 $\frac{2}{5}x\ =\ -10$  

Solve

•  $-4$   

• -25

• -55

• 25

Write an equation given the word sentence

6 more than a number k is 18

• k + 6 = 18

• 6 + k = 18

• k - 6 = 18

• 6 - k = -18

-m = 15

Solve

• m = 7

• m = 1/15

• m = 15

• m = -15

Danielle makes $14 per hour at her job. She wants to buy a new Apple Watch that costs $154. Write and solve and equation to find the number of hours she needs to work to purchase the Apple Watch.

• 14x = 154; x = 140 hours

• 14x = 154; x = 11 hours

• x/14 = 154; x = 2,156 hours

• 154x = 14; x = 17 hours

Write an equation given the word sentence:

the quotient of a number and 5 is -12

•  $\frac{x}{5}\ =\ -12$  

•  $5x\ =\ -12$  

• x - 5 = -12

• x + 5 = 12

-14 = -6 + p

Solve

• -20

• -8

• 2

• 8

-8x = -32

Solve

• -4

• 4

• 24

• -24