[Video] Q30: If ax+a=3, where a is a nonzero constant, which of the following must be equal to x+1?

Explanation for Question 30 From the Math (Calc) Section on the 2019 March Sat

Question 30 asks if a X plus a equals three, 2 where a is a non zero constant, 3 which of the following must be equal to X plus one. 4 So all we need to know here is that a ax plus a equals 5 three can be rewritten as a X plus one 6 is equal to three. And then when we divide both sides by a, 7 we get X plus one is equal to three over a. 8 So that means that the answer is D three.