Solving Two-Step Inequalities Answers
Which did you include in your solution? Check all that apply.
What is the first step in solving c ?
Solve –9.4 1.7x + 4.2.
Solve . x >
9/5
Monica has $20. She needs to buy a gallon of milk that costs $2.50. She also wants to buy yogurt, which costs $1.20 a cup. Which inequality can you use to find the number of cups of yogurt Monica can buy?
Monica can buy cups of yogurt.
14
Tony’s class needs more than $500 for the school dance. So far, they have raised $200. They plan to have a car wash, charging $8 a car, to raise more money. Tony solved the inequality 8x + 200 500, and determined that if they wash 37 cars, they will have enough money. Is he correct? Explain.
No, Tony is not correct. When you solve the inequality 8x + 200 ≥ 500, you first subtract 200 from both sides to get 8x ≥ 300. Then, dividing by 8 gives x ≥ 37.5. Since the class must wash a whole number of cars, they need to wash at least 38 cars to meet their goal. 37 cars would only raise 37 * 8 + 200 = $496, which is less than $500.
Question text not available
The first step in solving the inequality is to add 47.5 to both sides✔ subtract 47.5 from both sidesmultiply both sides by 47.5divide both sides by 47.5.
Review Jamie’s work. What was her error?
The second step is to add 4.5 to both sidessubtract 4.5 from both sidesmultiply both sides by 4.5 ✔ divide both sides by 4.5.
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