Which equation is correct regarding the measure of ∠1?

The product of two negative rational numbers is always zero sometimes zero never zero

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 equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)