Prove the divisibility of the following numbers: problem a: 8^10−8^9−8^8 by 55 = ? * 55 problem b: 81^7−27^9−9^13 by 45 = ? *45

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

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