The number of grams of an x-gram sample of a radioactive element left
after w weeks can be modeled by the expression x(0.75)^w What is the
approximate rate of decomposition per day?

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