What is the answer? 5x+3x+2y+4y=

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

The hawaiian alphabet has 12 letters. how many permutations are posible for each number of letters?