Jenna borrows $8,000 for college at a yearly simple interest rate of 6%. She takes 15 years to pay off the loan and interest. How much interest does she pay? What is the total amount she pays?

let y equal to

the total fare and x is the mile of taxi ride. so the equation is

y = 0.55x + 1.75

since susie has

$10 to spend for a taxi cab, so he can have

10 = 0.55x +

1.75

x = 15 miles of

taxi ride

so the system of

inequality is

10 < 0.55x +

1.75

x > 2