Lorna has $60 and her sister has $120. Lorna saves $7 per week, and her sister saves $5 per week. which equation and solution represent the number of weeks, w, it will take for the girls to have the same amount of money?

27/9=18/x a. x=9 b. x=18 c. x=6 d.x=3

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?

First to answer will be the brainliest i need the answer asap