Question

-3 + 2t is larger than or equal to 7

Answer 1

-3 + 2t ≥ 7

2t ≥ 7 + 3

2t ≥ 10          Divide by 2

t ≥ 10/2

t ≥ 5

I hope this explains it.

Answer 2

It depends on the value of t.