Simplify 2x - x + 4x​

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

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

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?