Who was the first president of zambia

The length and a quarter of the width of a rectangle add up to 7 in, while the length and the width add up to 10 in. what are the rectangle's length and width?

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

What is the average rate of change for this function for the interval from x=2 to x=4 ?