(x - 2)2 + (y + 4)2 = 49

Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.

Extra points! find the missing dimension! need asap

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount