Question

1. what needs to be added to get to the circled answer a) 17 b) -10 c) 10 d) -17

Explanation:

Step1: Assume starting point 0

Let the number to be added be $x$.

Step2: Set up equation

If we assume starting from 0, and the target (circled answer a) is 17, then $0 + x=17$, so $x = 17$.

Answer:

A. 17