Write expression using a positive exponent
14. 4⁻¹
15.5⁻³
16. -6⁻²
17 -3⁻³
18 3⁻⁵
19 10⁻⁴
20 p⁻¹
21 a⁻¹⁰
22. d⁻³
23 q⁻⁴
24. b⁻¹⁵
25 r⁻²⁰

Write the sentence as an equation. b increased by 281 is d

27 is what percent of 108? 27 is % of 108

Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?