An plumber charges a flat rate of $25 for a job and $15 for each hour that he works on the job. how many hours did the plumber work on a job if the total charge was $85

If you answer 2+2 you will get over 80 points

Three people are traveling and need to exchange the currency of their native country for the currency of the country they are visiting. drag each exchange to the category that shows the ratio of currencies in that exchange.

Me i’m stuck on all these questions besides the two bottom ones