Given function:
y=-7.3x+39.7
Where y= number of gallons of water
and x= number of minutes
Put value of y=17.8 gallons and solving for x.
17.8=-7.3x+39.7
Subtract 39.7 from both sides
-21.9=-7.3x
Divide both sides by -7.3
3=x
or
x=3 minutes
After 3 minutes the water in the tub will be 17.8 gallons.
Answer: 3 minutes
See picture for a reply to your question.
Answer:
C
Step-by-step explanation:
standard form is ax + by = c, which is true for the third option.
15 divided by 6 2/3 is 2 1/4