Using square root tables evaluate (0.00085148)squared​

Y=4x^2+x-1 solve using quadratic formula

If a baby uses 15 diapers in 2 days, how many diapers will the baby use in a year?

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500