How can an expression or process be determined for a geometric sequence?

When they are both racing on hoverboards, victoria is 3 times as fast as her brother max. when she is on foot, she is 3 times slower than max on his hoverboard. they took off on hoverboards at the same time, but after 12 minutes, victoria’s hoverboard broke and she immediately started to run. if the race was a tie, how long, in minutes, did it last from start to finish?

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees