IS IT A OR B OR C OR D

The difference of 2 numbers is 21 and the quotient of the equation is 4 then what are the two numbers?

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

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?