Max earned a 85% on his test. if there were 40 questions on the test how many did he get correct?

Plz me plzzzzzzz i need and plz delte this after answer

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.

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.