The mean IQ score of adults is​ 100, with a standard deviation of 15. Use the empirical rule to find the percentage of adults with scores between 70 and 130.​ (Assume the data set has a​ bell-shaped distribution.)

If there are 12 moths and some have 31 days and others have 30 days how many have 28 days?

Barney & noblet customers can choose to purchase a membership for $25 per year members receive 10% off all store purchases 1. how much would a member pay per year if he bought $50 worth of items each year? 2. write a slope-intercept equation that expresses how much a member pays per year using x to represent his purchases per year 3. how much would a member have to spend per year to pay off his membership fee?

The function v(r)=4/3pir^3 can be used to find the volume of air inside a basketball given its radius. what does v(r) represent