Witch of the following is closest to 27.8 x 9.6 is it 280, 2800, 300, or 3000

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

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?

Which graph correctly represents the equation  y=−4x−3? guys me iam not trying to fail summer school and will offer 40 points for who ever me with the next 3 problems and will give brainlest