Ill give brainliest
please help me.

Part A) 7w - 77 = 42

Part B) W= 17

You have 7 dollars a week so 7w then spend 77 so minus 77 and 42 left

I wish I can see it but I can’t I’m really really sorry

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.