Ms. Howe the Animal Rescue Mission manager says that, to find the profit P from the concession stand she is running you need to know how many visitors V and the number of visitors will depend on the temperature T. P = 3.5V - 150 and V= 40T - 1000 Find the Profit when the temperature is 80 degrees.

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.