David designs floor tiles. his latest design is shaped as a regular pentagon. write a formula for the perimeter of the tile in terms of the length of a side. evaluate the formula for the side length of 3 inches.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

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

Having a hard time understanding this question (see attachment).