In your question, 45 is not a perfect square. A perfect square is when you divide or multiply the number by itself. 36 is a perfect square because it's factor is 6 x 6 (6,6). <span>64 is a perfect square because it's factor is 8 x 8 (8,8). </span><span>81 is a perfect square because it's factor is 9 x 9 (9,9).</span>
Answer: There are no fractions listed, so I can't help you. 1/3 is a repeating though, if that helps anything. Otherwise, you could use a calculator and just find the decimal of the fraction.
He needs $100 for the new bike but already has the $28 so you also have to add 12x because thats what you need to find. X represents the amount of days he has to work.