Ineed on this it's high school geometry

Leslie started last week with $1200 in her checking account. during the week, she wrote the checks below.

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?

Which point-slope form equation represents a line that passes through (3,-2) with a slope of -4/5