Find the percent of increase or decrease? x to 5x

4+6x-3x^3 in standard form with explanations because i don’t understand

Mr switzer needs to buy new 1-foot tiles to cover his bathroom floor. the floor is 12 feet long and 8 feet wide. each square foot of tile will cost $1.79. in dollars what will be the total cost of the tiles he needs to buy.

Whose conclusion is correct? choose all that apply. (two max) elijah emily edward esme