Executive Training,Inc Required:
A

Executive Training,Inc. ,provides a personal development seminar that is popular with many companies.The number of seminars offered over the last five months,along with the total costs of offering these seminars,follows:

$\begin{array}{lcc}&\text { Seminars Offered } & \text { Costs Incurred } \\\text {April }&55 & \$ 15,400 \\\text {May }&45 & \$ 14,000 \\\text {June }&60 & \$ 18,000 \\\text { July}&50 & \$ 14,700 \\\text {August }&75 & \$ 19,000\end{array}$

Required:
a.Using the high-low method,estimate the variable cost per seminar and the total fixed cost per month.
b.Using the least-squares regression method,compute the variable cost per seminar and the total fixed cost per month.(Round off to the nearest whole dollar. )