30 points for this question please help

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.

Find the constant of variation for the relation and use it to write an equation for the statement. then solve the equation.

If x is 6, then 7x= a. 13 b. 42 c. 42x d. 76