The answers are a. 1311.7 in^2
b. 1312.8 in^2
c. 1315.7 in^2
d. 1310.2 in^2

When I tried to do it I got: 2580 in^2 which is apparently way off?
Help!

You put $2000 in an account with a simple interest rate of 1.5%. how long does it take for the account to earn $60?

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

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.