Je vous aiderais... mais y a-t-il une question pour elle ?
9.6 is your answer! (nine and six tenths)
Mpg = 476/14 = 34 mpg
d = 578 miles = (34 mpg)(x gallons)
578 = 34x
x = 578/34 = 17 gallons
Is the 2 a exponent?
If it is the answer is for that:
-3x^2+12x
=3x(-x+4)
=3x(-x+4)