U, TUU
C. 6
c. 25
5. a varies inversely as the square of b. If a is 1 when bis 3, find a when bis 5.
d. 4
a. 0.36
b. 9
d. 36
6. Suppose y varies jointly as x & z. If y = -180 when z = 15and x = -3,then find y when x = 7 and z=-5.
a. -140
b. 140
d. 4
7. Suppose p varies directly as r, and p varies inversely as t. If t= 20 when p = 4 and r = 2. Find t when r = 10 and
p = -5.
a. 4
b.-20
d. 80
C.-4
C. -80​