Triangular prism 0.75 x 1 x 2 dimension

Ineed someone to me answer my question i have to have this done and knocked out

The price of a visit to the dentist is calculated according to the formula 50+100n50+100n where nn is the number of cavities the dentist finds. on your last visit to the dentist, 22 cavities were found. what was the cost of your visit?

Awindow washer cleans 42 windows in 2 hours. at this rate, how many windows did he clean in 180 minutes.