What is f-1(-3)?
N f(x)
-6
-3
-3
-1
0
1
3
3
6
5

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Ineed with math stuff it involves graphs

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq between 80 and 120.