Samuel deposits $1,800 in an account that earns 12% simple annual interest. how many months will it take for samuel's account balance to reach $2,448?

use the simple interest formula i = prt, where i = interest, p = principal or amount borrowed, r = rate, and t = time (in years).

Which representation has a constant of variation of -2.5

8. kelly wants to buy a magazine that is $25. later the magazine was marked up an additional 20%. what is the new price?

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.