You use your mobile phone to phone home every day. it costs $15 per month and 18c per minute for phone calls.  how much will you have to pay for 420 minutes of calls including the monthly charge?

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?

Aproblem on a geometry test asks students to sketch a regular polygon. which choice could be a solution for this problem?

The graph of a function never has two different points with the same x-coordinate because