Khan Academy 8th grade

One integer is 5 more than another. their product is 104. find the integers

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

Estimate the area under the curve f(x) = 16 - x^2 from x = 0 to x = 3 by using three inscribed (under the curve) rectangles. answer to the nearest integer.