What is the explicit function of the sequence 23, 21, 19, 17?

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

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Graph the equationy= x+3[tex]y = x + 3[/tex]