Relative frequency help please

Find the balance at the end of 4 years if 1000 is deposited at the rate of

Find x to the nearest hundredth place

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