Femi drove 290 miles from his college to home and used 23.2 gallons of gasoline. his sister, kehinde, drove 225 miles from her college to home and used 15 gallons of gasoline. whose vehicle had better gas mileage? [5]

Find the unit cost (that is, the number of miles per gallon of gas) in each case.

Case 1:

290 mi

= 12.5 mpg

23.2 gal

Case 2:

225 mi

= 15 mpg

15 gal

Kehinde's car got the better mileage:  15 mpg versus 12.5 for Femi's car.

why can't you?

step-by-step explanation:

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb