Question

I have the first 3 answers, I just need help with the last 3.

Answer 1

See below

Explanation:

`\displaystyle \int^(28)_(12)f(x)\,dx=\biggr((8*10)/(2)\biggr)-\biggr((8*10)/(2)\biggr)=0` <-- These areas are just triangles

`\displaystyle \int^(28)_(12)|f(x)|\,dx=\biggr((8*10)/(2)\biggr)+\biggr((8*10)/(2)\biggr)=8*10=80` <-- Areas are added as if they were both above the curve

`\displaystyle \int_8^0f(x)\,dx=-\int_0^8f(x)\,dx=-64` <-- The 64 part comes from part A