Its necessary to know the truth value of all propositions

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

Simplify 24÷(-2)(3)+7 a. -29 b. 3 c. 11

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?