Evaluate the powers of 3 to find each value.
What is the value of 3^-2
What is the value of 3^0
What is the value 3^1
What is the value of 3^3
Pls help

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π