Given the function f
(
x
)
=
x
3
−
6
x
2
,
f(x)=x
3
−6x
2
, find all intervals on which
f
f is concave up.

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g