Ineed on equations and inequalities

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)