Slope of line 3x-5y=6

The figure below shows rectangle abcd and the triangle eca on a coordinate plane.which of the following expressions represents the perimeter of triangle of triangle eca in units

Akitchen is 12 ft. by 14 ft. with 10 ft. high walls. how much would it cost to put vinyl flooring in this room? $8.80 per ft

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122