c varies directly as the square of a and inversely as b. c=18 when a=3 and b=6. Find the value of c when a=10 and b=24
Question 6
6.
p varies jointly with q and the square root of r. When p = 84, q = 3 and r = 49. Find p when q = -2 and r = 25.
Question 7
7.
At a shoe store, the sales of Nike, N, shoes vary jointly as the sales of Adidas, A, and New Balance, B. If 250 Nike shoes were sold with 25 Adidas shoes and 5 New Balance shoes, how many New Balance would sell when 750 Nike shoes and 125 Adidas shoes are sold?
Question 8
8.
The number of squirrels, s, varies directly as the number of bunnies, b, and inversely as the square of the number of dogs, d. When there were 8 squirrels and 12 bunnies, there were only 6 dogs. Find the number of bunnies when there are 39 squirrels and 4 dogs.