How to find the line of reflection between two points?

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

Complete the standard form of the equation that represents the quadratic relationship displayed above, where a, b, and c are rational numbers.

The graph of h(x)= |x-10| +6 is shown. on which interval is this graph increasing