Look at the picture, it’s easy

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Which fraction is equal to 1hole and 2/5? a.3/5 b.75 c.57 d.73

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.