Assume that a randomly selected is given a bone density test. Those test scores are normally distributed with a mean of 0 and a standard deviation of 1. Find the probability that a given score is less than -1.43. What is the probability

The marriott family bought a new apartment three years ago for $65,000. the apartment is now worth $86,515. assuming a steady rate of growth, what was the yearly rate of appreciation? what is the percent of the yearly rate of appreciation?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

The sum of these consecutive integers is equal to 9 less than 4 times the least of the integer. find the three integers