What is the equation of the line that has a slope of -2 and goes through the point (0, 5)

Find the sum of the following series. round to the nearest hundredth if necessary.

Can someone me with this problem . show your work .

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