HELP An 80% confidence interval for a proportion is found to be (0.12,0.18). What is the sample proportion? A. 0.16
B. 0.15
C. 0.14
D. 0.18

Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?

You deposit $5000 each year into an account earning 3% interest compounded annually. how much will you have in the account in 30 years?

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?