Identify the rational number as positive or negative. 1) -2/+3
2) -1/+3
3) +2/+3
4) +1/+3
5) +2/-3
6) +1/-3
7) -1/-3
8) -2/-3
Pls. I need help ASAP

Answer question above and explain each step : )

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.

If you apply the changes below to the linear parent function f(x)=x what is the equation of the new function vertically stretched by a factor of 3 flip over the x axis