One integer is 8 more than another. their product is 209. find the integers

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

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

Using only odd number for numerators write two different subtraction problems that have a difference of 3/4