Scuba diving, Elisa descends at a rate of 7 1/2 feet per minute. How long will it take her to reach a depth of 90 feet? Show your work and explain your reasoning.

12 minutes

Step-by-step explanation:

7.5 feet every minute

90 feet- x minutes

90/7.5- 12

:)

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x