Omar wants to purchase a new iphone. it costs $1,000. to pay for the phone he will
participate in the following payment plan: he will make a down payment of $250, then
make 6 monthly payments of $150 each.
a) how much will he pay for the phone (in total), after the down payment and monthly
payments?
b) what is the percent increase from the original cost of the iphone, to the price omar
will pay for the phone on his payment plan?

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?

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

Find the length of the radius of a circle with the center at -7+2i and a point in the circle at 33+11i