What is the ratio of 50 and 10

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Clarence wants to buy a new car. he finds an ad for a car that costs 27,200 dollars. suppose his local sales tax is 7%. -how much would he have to pay? -what is the cost of the car including tax? -if clarence has 29,864 saved, can he pay cash to buy the car?

8.74 rounded to the nearest whole number