Please help. 30 points + brainliest.

Answer this question only if you know the answer! 30 points and

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48

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.