Jada’s lawn mowing service charges $28 an hour plus a $20 fee to cover gas for the mower. Mai’s lawn service charges $16 an hour, but a $44 fee. For how many hours will Jada’s service be cheaper than Mai’s?

Simplify (1/2)4th power a. (1/16) b.(1/8) c.(1/4)

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Alexandra drove from michigan to colorado to visit her friend. the speed limit on the highway is 70 miles per hour. if alexandra's combined driving time for the trip was 14 hours how many miles did alejandra drive?