Asweater originally costs $80 is now on sale for $60. how much did the percent decrease?

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

The measure of angle 0 is 600 degrees

Plz , will award brainliest find an equation for the line that goes through the points (5,-8) and (13,4)