Please help and show your work please.

Donna Crossing purchased a used Ford Focus for $11,400. Since purchasing the car, she has spent the following amounts on parts and labor: New stereo system New paint job New tires New muffler Total $1,610 2,270 1,174 270 $5,324 Unfortunately, the car needs a few major repairs now; among other things, the brake rotors and pads must be replaced, and the radiator has sprung a leak. (A new radiator is needed.) The repairs are estimated to cost $2,660. Donna has looked around at other used cars and has found a used Honda Civic for $11,220 that is in very good condition and is approximately the same age as the Ford Focus. Donna can sell the Ford Focus "as is" for $9,100. Assuming that Donna would be equally happy with either the Ford Focus or the Honda Civic, should she buy the Civic or repair the Focus? Incremental of repairing the Focus $ Donna should