Rachel and jeffry decided to start saving for college. rachel has $1,500 to start her savings account, and jeffery has $1,200. rachel’s bank offered her an interest rate of 7.5% compounded annually. jeffery decided to keep his money in a safe in his bedroom, and he adds $200 to his safe each year. suppose that a represents the accumulated money in each one’s savings fund and t represents the number of years. choose the equations that form the system that best models this situation. a) a = 200t + 1,200 b) a = 1,200(1.2)^t c) a = 7.5t + 1,500 d) a = 1,500(1.075)^t e) a = 1,200(1.075)^t

Asample of 200 rom computer chips was selected on each of 30 consecutive days, and the number of nonconforming chips on each day was as follows: the data has been given so that it can be copied into r as a vector. non.conforming = c(10, 15, 21, 19, 34, 16, 5, 24, 8, 21, 32, 14, 14, 19, 18, 20, 12, 23, 10, 19, 20, 18, 13, 26, 33, 14, 12, 21, 12, 27) #construct a p chart by using the following code. you will need to enter your values for pbar, lcl and ucl. pbar = lcl = ucl = plot(non.conforming/200, ylim = c(0,.5)) abline(h = pbar, lty = 2) abline(h = lcl, lty = 3) abline(h = ucl, lty = 3)