What expression represents the difference of 32 and n x 10

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.

Explain why the factor 1.5 is broke. into two numbers in the model.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?