What is 3 1/3 + (-2 1/4) + 1 5/6?

also, i need to learn how to do it asap
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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.

Write an equation for the function that includes the points (2,100)and (3,100)

Will give a: 122 b: 90 c: 48 d: 180