a family friend has a car available for you to buy. She’ll sell it to you for $3500. Unfortunately you only have $500 saved up. If it is possible for you to save $100 a month, your friend will reduce the price of the car $50 a month until you have enough money saved to purchase the car.

221,500 is the answer

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.