The mean and standard deviation of "Y = the number of 2-inch binders purchased by a single customer" is 2.74 and 1.25, respectively. Assume that the number of 1-inch and 2-inch binders
purchased are independent random variables. What are the mean and standard deviation of the total
number of binders purchased by a single customer?

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

Ineed to know the answer to this algebra question.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?