A recent survey found the following distribution for the number of hours a person sleeps per night.
12
Less than 6 hours
6 hours
7 hours
26
30
28
8 hours
More than 8 hours
4
100
Find the probability that the person sleeps at most 8 hours per night.
Enter your answer as a reduced fraction a/b.

If $740 is invested at an interest rate of 11% per year and is compounded continuously, how much will the investment be worth in 7 years? use the continuous compound interest formula a = pert.

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

What is the radius of the cone in the diagram? round your answer to the nearest whole number