A variable is defined as….

Kapil needed to buy a long wooden beam. he went to two sawmills that each charge an initial fee plus an additional fee for each meter of wood. the following equation gives the price (in dollars) of a wooden beam from the first sawmill as a function of its length (in meters). p = 5+20xp=5+20x

Ineed in figuring out this problem.

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?