Rex earns $9.50 per hour working part-time. He worked 10.5 hours each week for two weeks. What was the total amount rex earned for working the two weeks?

An unknown number of kids and buses are getting assigned. when assigning 4 kids to each bus, there are 2 kids that aren't placed in a bus. when assigning 8 kids to each bus, there are 2 empty buses. how many total kids are there?

Having a hard time understanding this question (see attachment).

Which diagram shows lines that must be parallel lines cut by transversal?