The director of marketing at a large company wants to determine if the amount of money spent on internet marketing is a good predictor of company profit. She fits a least-squares regression line to 20 months of data and computes the following regression line:Profit = 372.6 + 17.2(advertising dollars)

What is the value of the residual for advertising dollars spent equal to $1,020 and Profit equal to $17,500? Round to the nearest integer.

The function f(x) = 4(3)x represents the growth of a dragonfly population every year in a remote swamp. Erin wants to manipulate the formula to an equivalent form that calculates four times a year, not just once a year. Which function is correct for Erin's purpose, and what is the new growth rate?

I have $5$ different mathematics textbooks and $4$ different psychology textbooks. In how many ways can I place the $9$ textbooks on a bookshelf, in a row, if there must be a psychology textbook exactly in the middle, and there must be a mathematics textbook at each end?

At the beginning of the year, a sporting goods store had $250,000 worth of inventory. The store’s buyers purchased an additional $115,000 worth of inventory during the year. At year’s end, the value of the inventory was $185,000. What was the store’s cost of goods sold?

tina and jim work at a different car wash. tina is paid $37 per day plus 1.50 for each car she washes. jim is paid $40.00 per day plus 1.00 for each car she washes.

write an expression that represents the amount tina is paid each day given the number of cars she washes.  I put   37+1.5c

write an expression that represents he amount jim is paid each day given the number of cars he washes.     I put 40+1.00c       Did I do this correct???

If p varies directly with q, and p = 8 when q = 2, what is the value of p when q = 7?A.p = 1

B.p = 100

C.p = 40

D.p = 28

Can anyone do question 25 part c? :)