Evaluate: -7 - (-8) + (-3) + 6 - 2

Is it true or false i’m trying to pass this test so i can leave school

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

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.