Acountry's population in 1990 was 134 million. in 2000 it was 139 million. estimate the population in 2014 using the exponential growth formula. round your answer to the nearest million. p =ae^kt note: when solving for k, round to four decimal places!

Tom drove 206 miles in 3.9 hours. estimate his average speed.

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?

What ia the sum if the first 7 terms of the geometric series