A grocery store estimates that the weekly profit (in dollars) from the production and sale of x cases of soup is given by and currently 1100 cases are produced and sold per week. Use the marginal profit to estimate the increase in profit if the store produces and sells one additional case of soup per week.

the entire expression should be subtracted from 30. to subtract the quantity, distribute the negative sign, which changes the signs on the terms. so, the –2 changes to positive and gets added to 30 instead of subtracted from it.

hope this ! ^w^

4a. is 3 miles every hour

4b. is 1/3 of an hour per mile

step-by-step explanation:

jbankston is right, use thhe link and you should find the answer.