Ndiba and Jose are selling fruit for a school fundraiser. Customers can buy small boxes of oranges and large boxes of oranges. Ndiba sold 5 small boxes of oranges and 1 large box of oranges for a total of $57. Jose sold 2 small boxes of oranges and 1 large box of oranges for a total of $30. Find the cost each of one small box of oranges and one large box of oranges.

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.

Gabriel determined that his total cost would be represented by 2.5x + 2y – 2. his sister states that the expression should be x + x + 0.5x + y + y – 2. who is correct? explain.

Write the percent as a fraction or mixed number in simplest form. 0.8%