8. Sophie needs $130.50 for a train ticket. She already has $18, and she can earn the rest by working 12.5 hours at her job. Which equation can be solved to find h, Sophie's hourly earnings.

What is the volume of the sphere shown below with a radius of 3?

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?

Precalculus question, image attached.