The table shows the amount of money remaining on a $50 gift card after buying x cups of coffee. Which equation represents the amount remaining, A(x) as a function of x, the number of cups of coffee bought?
Cups of coffee (x) Amount of $ remaining
()
50
46
38
9
32
0
2
6
O A(x) = 2x + 50
A(x) = -4x + 50
Alx) = -6x + 50
o A(x) = -2x + 50

The john deere company has found that revenue, in dollars, from sales of heavy-duty tractors is a function of the unit price p, in dollars, that it charges. if therevenue r is r(p)= -1/2p^2 +1900pa)how much revenue will the company generate if they sell 700 tractors? b) how many tractors does the company want to sell to maximize the revenue?