Atrain travels 53 kilometers in 4 hours, and then 99 kilometers in 4 hours. what is its average speed?

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

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?