Question

use your equation from part b to predict the city MPG for a car that gets 68 MPG on the highway.equation from part b:y = 7x/9 + 125/9

Answer 1

we have the equation

`y=(7)/(9)x+(125)/(9)`

so

For y=68

substitute in the given equation and solve for x

`68=(7)/(9)x+(125)/(9)`

solve for x

Multiply both sides by 9

612=7x+125

7x=612-125

7x=487

x=69.57

round to the nearest whole number

x=70