An amusement park is open for 15 hours a day, 7 days a week Their admission prices are listed below:

3 hours or less: $15

Between 3 and 7 hours: 522

7 or more hours: $30

Part A: Identify the functions and their domains for this context.

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.