U and v are position vectors with terminal points at (-1, 5) and (2, 7), respectively. Find the terminal point of -2u + v (0, -3)
(4, -3)
(4, 17)
(9, -8)

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

Plzzz answer both questions and i will give you 100 points

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.