MATH SOLVE

3 months ago

Q:
# The amount of water in a bathtub as it drains can be modeled by this equation with y representing the number of gallons of water in the tub and x representing the time, in minutes, that the tub has been draining. y=−7.3x+39.7 After how many minutes will the tub have 17.8 gallons of water remaining? Enter your answer in the box.

Accepted Solution

A:

y = -7.3x + 39.7

The first thing we must do for this case is to make use of the given equation and replace the value of y:

17.8 = -7.3x + 39.7

Now we clear x:

7.3x = 39.7-17.8

x = (39.7-17.8) / (7.3)

x = 3

Answer:

the tub will have 17.8 gallons of water remaining after 3 minutes

The first thing we must do for this case is to make use of the given equation and replace the value of y:

17.8 = -7.3x + 39.7

Now we clear x:

7.3x = 39.7-17.8

x = (39.7-17.8) / (7.3)

x = 3

Answer:

the tub will have 17.8 gallons of water remaining after 3 minutes