1. If y varies inversely as x and y=1/13 when x=8 find y when x=-4

a.-2/3
b. 2/3
c. 27/4
d. 5

2. A giant swing completes a period in about 15 seconds. Approximately how long is the pendulum's arm using the formula t=2π√1/32, where 1 is the length of the pendulum in feet and t is the amount of time? (use π= 3.14)

a. 573.25 feet
b. 182.5 feet
c. 16.65 feet
d. 4.31 feet

3. In a flagpole, a 10 meter rope is attached to the top of the pole from a point on the field. If the rope is 8 meters away from the base, how high is the pole?

a. 1.41 metre
b. 4.24 metre
c. 6 metre
d. 12.81 metre

​​