How do I do 3 and 4

003 10.0 points Estimate the area, A, under the graph of f(x) = on [1, 5] by dividing [1, 5] into four equal subintervals and using right endpoints. 1. A ~ 5 74 2. A ~ 15 26 3. A ~ 4. A ~ 5. A~ 004 10.0 points Estimate the area under the graph of f(x) = 20 - 2-2 on [0, 4) by dividing [0, 4] into four equal subintervals and using right endpoints as sam- ple points. 1. area ~ 50 2. area ~ 51 3. area ~ 52 4. area ~ 53 5. area ~ 49