Answer:
r=8
Step-by-step explanation:
Because 16 divided by 2 is 8
idk i cheat lol
B the mean increases by 6.8
He multiplyed 3x8 and 5x8 when it should be 3x8 and 5x1 because you but 1 under the 8 to make it into a fraction.
24 dollars
f(x)=-|x|-2
vertex is (0,-2)