Minh and Mikayla are selling wrapping paper for a school fund-raiser . Customers can buy
either packages of folded paper or rolls of paper. Minh sold 6 rolls of paper and 2 packages of
folded paper for a total of $44. Mikayla sold 3 rolls of paper and 9 packages of folded paper
for a total of $54. How much does each roll cost? How much does each package of folded
paper cost?

When you answer this can you explain

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.

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.