Find the values of unknown angles. Show your work.

Name the type of the angles

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?

Diane owes $387 to her brother. if she debits her bank account $161.25 a month to pay him back, how many months will it take her to pay off the debt?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?