Question

Solve: |2t + 5| = 3
A. {1, 4}
B. {-1, -4}
C. {-1, 4}
D. {1, -4}

Answer 1

You have two equations to solve
since |f(x)|=a, where a>0
means you have f(x)=a or f(x)=-a
So in others words for your problem you need to solve both of these equations for t
2t+5=-3 or 2t+5=3