3) Tim's salary at work is $300 per week plus $15 commission for every microwave he sells (m). Write a function for Tim's weekly salary (S).

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.

Xis -1/2
y is 35/4.

Igot -8 as an answer