1. An object in the shape of a semicircle of radius 4 cm has varying density. The density changes linearly depending on the h value as shown in the picture, from
1 g/cm at the bottom to 3 g/cm at the top. What is the total mass of the object?
Explain your work.

step-by-step explanation:

to determine whether a given function is even, we simply substitute x with -x in the expression. if the result after simplification is identical to the original equation, then the function is said to be even other wise odd.

f(-x) = (-x)^2 - (-x) + 8

      = x^2 + x +8

the resulting function is not identical to the original one;

f(-x) ≠ f(x)

therefore, f(x) is not an even function

put greater than symbol. (> ). can i get brainliest?

the answer is  

d.

21

i did this one. so you should get it right.