Question

Which inequality represents six less than three times a number is at least fifteen?

Answer 1

Answer:

Putting it all together, we get 2x – 5 ≥ 15.

then solve the inequality

We undo everything the algebra did to x to solve in the reverse order.

2x – 5 ≥ 15 First, undo the subtraction by adding 5 to both sides.

2x ≥ 20 Next, divide both sides by 2.

x ≥ 10. We see that x has to be greater than or equal to 10. This means we could pick any number, 10 or greater, and plug it back into the equation we constructed to check our answer.