f(0) = ( f(k) +f(-k) ) / 2
f(0) = (16 - 4) / 2
f(0) = 12 / 2
f(0) = 6 → ANSWER
*Remember that f(0) = m(0) + n = n
If we have f(x) = mx + n, then:
f(k)= mk + n and f(-k)= -mk + n
If we add them:
f(k) + f(-k)
= mk + n -mk + n
= 2n
= 2f(0)
So we conclude that:
f(0) = [f(k) + f(-k)] / 2
Check the picture below.
well, the volume of the craft prism will simply be length * width * height, and we know that is 7140.
![\textit{volume of a rectangular prism}\\\\ V=Lwh ~~ \begin{cases} L=length\\ w=width\\ h=height\\[-0.5em] \hrulefill\\ L=17\\ h=28\\ V=7140 \end{cases}\implies \begin{array}{llll} 7140=(17)w(28)\implies \cfrac{7140}{(17)(28)}=w \\\\\\ 15=w \end{array}](https://tex.z-dn.net/?f=%5Ctextit%7Bvolume%20of%20a%20rectangular%20prism%7D%5C%5C%5C%5C%20V%3DLwh%20~~%20%5Cbegin%7Bcases%7D%20L%3Dlength%5C%5C%20w%3Dwidth%5C%5C%20h%3Dheight%5C%5C%5B-0.5em%5D%20%5Chrulefill%5C%5C%20L%3D17%5C%5C%20h%3D28%5C%5C%20V%3D7140%20%5Cend%7Bcases%7D%5Cimplies%20%5Cbegin%7Barray%7D%7Bllll%7D%207140%3D%2817%29w%2828%29%5Cimplies%20%5Ccfrac%7B7140%7D%7B%2817%29%2828%29%7D%3Dw%20%5C%5C%5C%5C%5C%5C%2015%3Dw%20%5Cend%7Barray%7D)
we know the area of the top is just w * 17, and the circle is just 2/5 of that, well that's just

Slope is 2 and y-intercept is 9
The number is read as three-hundred twenty four thousand nine-hundred four