Subtract: (3x2 − 8x + 3) − (−5x2 + 4x − 5)
8x2 − 12x + 8
−2x2 − 4x − 2
−2x2 − 12x + 8
8x2 − 4x − 2

Sal is tiling his entryway. the floor plan is drawn on a unit grid. each unit length represents 1 foot. tile costs $1.35 per square foot. how much will sal pay to tile his entryway? round your answer to the nearest cent.

With alll of except for the 2 that i did already

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect