In how many ways can four people sit in a car for a road trip if only two of them can drive?

How many $20 bills do you need to have to make $280

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

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.