Using the equation y=kx what would be the proportionate equation if she worked 25 hours and made 150.00

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

Can someone explain to me how to do

Which of the following is missing in the explicit formula for the compound interest geometric sequence below?