Can someone please help me answer this question?

Using the midpoint formula, calculate elasticity for each of the following changes in demand. * (20 Points) PI 1'2 Q1 Q2 Demand for: a. Cashews $150 per $6.00 800 pounds 1,000 pound per pound per month pounds per month I}. Portable $30 $120 7'5 per year 65 per hard drive year {1 terabyte) 4 lZgauge 0.60 per 0.45 per 2.500 lineal 5.000 copper wire lineal lineal feet per lineal feet foot foot week per week d. Toothpaste $2.00 per $140 per 10 tubes 9 tubes tube tube per month per month Enter your