Find the slope of the table

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.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area