Equation Word Problems

Three times the sum of a number and 7 is equivalent to 57. 

• 3x + 7 = 57 

• 3(x + 7) = 57

• 7x + 3 = 57 

• 7(x + 3) = 57

Twice the difference of a number and 16 is equivalent to 28.

• 2x + 16 = 28

• 2x - 16 = 28 

• 2(x + 16) = 28 

• 2(x - 16) = 28

Heather dropped a water balloon over the side of her school building from a height of 80 feet. The approximate height of the balloon at any point during its fall can be represented by the following quadratic equation: h = -16t² + 80 About how long did it take for the balloon to hit the ground?

• 1.73 seconds

• 2.24 seconds

• 2.45 seconds

• 2.83 seconds

20 Fuji apples cost $12. How many Fuji apples can you buy for $3?

• 8

• 7

• 5

• 1

• 25

• 10

• 50

• 75

• 18

• 5

• 15

• 8

• 
• 
• 
• 

• 10 months

• 7 months

• 5 months

• Stays the same

• 6.25x + 30 > 9.75x + 12

• 6.25x + 30 < 9.75x + 12

• 6.25 + 30x > 9.75 + 12x

• 6.25 + 30x < 9.75 + 12x

• -14

• -7

• 1/14

• -1/7