Solve the formula C= 3.14*d ?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Find the maximum value of p= 4x + 5y subject to the following constraints :

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?