From some petroleum, you can get 30% of paraffin. how much petroleum do you need in order to get 18.75 tons of paraffin?

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

Change negative exponents to positive, then solve

The image of abc after a reflection across eg is abc