In this question, I knew I had to find the area of the lawn in order to determine how much it should cost per month. Since the composite figure was a trapezoid, I used the area of a trapezoid formula which asks me to add the lengths of the parallel sides and then multiply by the height (BEDMAS). We then divide by 2 to find the area is 510m^2.
However, after double-checking my answer, I can see that I forgot to divide by 2, so the actual area is 255 m^2. This means that Denton should expect to pay $70 per month rather than $80 as I had originally stated.
