Question

Find the solution set for the following problem.
Two times a number increased by one is at least seven.
{x | x ≤ -3}
{x | x ≥ -3}
{x | x ≤ 3}
{x | x ≥ 3}

Answer 1

wouldn't this be the last one because 7 is more than 3

Answer 2

Two times a number: 2x
Increased by 1: 2x+1
At least seven: 2x+1 >= 7
Solving that:
2x>=6
x>=3

So you are correct.