You want to estimate the average price of a home in your city. You know that the standard deviation in prices is $80,000. You take a simple random sample of 40 homes and compute a sample mean of $288,000. 1. Find a 95% confidence interval for the population mean. 2. How many homes would you need to sample to get a margin of error of less than $8000.

Monica build a remote control toy airplane for science project to test the plane she launched it from the top of a building the plane travel a horizontal distance of 50 feet before landing on the ground a quadratic function which models the height of the plane in feet relative to the ground at a horizontal distance of x feet from the building is shown

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?