Question

Liang has a goal of walking at least 18 miles. She walks at a rate of 4 miles per hour. Which inequality can liang use to find h, the number of hours she should walk in order to meet or exceed her goal

Answer 1

Liang can use the inequality 4 × h ≥ 18 to find the number of hours she needs to walk to meet or exceed her 18-mile goal. By dividing both sides of the inequality by 4, she will find that she needs to walk for at least 4.5 hours.

Step-by-step explanation:

Liang has a goal of walking at least 18 miles and walks at a rate of 4 miles per hour. To find h, the number of hours she should walk to meet or exceed her goal, the inequality that Liang can use is:

4 × h ≥ 18

This inequality states that the product of her walking rate (4 miles per hour) and the number of hours (h) should be greater than or equal to her goal of 18 miles. To solve for h, you would divide both sides of the inequality by 4:

h ≥ ÷ (18 ÷ 4)

h ≥ 4.5

So, Liang needs to walk for at least 4.5 hours to meet her walking goal.