Whenever you have a root of sqrt #, you must have the matching - (or positive).
This is because when you take a square root you get two solutions a positive and a negative.
The answer is LETTER A
Grace’s because she followed the order of operations. Addition and subtraction first, then multiply and divide.
2*(4+y)
The answer is c.
Its two times the sum so two is on the outside and 4 and y come after the word sum so its addition.
