Helppp find domain and range

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

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?