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Questions in Grade Middle-school
📝 Answered - David keeps records of his monthly earnings. Last month he worked 120 hours and earned $2700. This month he worked 100 hours and earned $2300. Which equation could you use to find \( f(x) \), the amount he would earn at this rate if he worked \( x \) hours? A. \( f(x) = 120x + 400 \) B. \( f(x) = 400x \) C. \( f(x) = 100x + 300 \) D. \( f(x) = 20x + 300 \)
📝 Answered - Stacia has saved $36 towards the purchase of a new MP3 player. This is 28% of the total price. What is the price of the MP3 player?
📝 Answered - The pattern blocks in a box are quadrilateral except for one. What shape could the block that is not a quadrilateral be?
📝 Answered - Which of these statements explains the relationship among elements, compounds, and mixtures? A. Elements are made of compounds and mixtures. B. Both compounds and mixtures are made up of elements. C. Mixtures are made of elements, and elements are made of compounds. D. Compounds are made of mixtures, and mixtures are made of elements.
📝 Answered - Which force is responsible for seafloor spreading? A. The effect of tides B. Convection in the crust C. Convection in the mantle D. Gravity in the mantle
📝 Answered - The school band sold T-shirts to fund a trip to play in a parade. They collected $570, and the band made 34% of that amount. How much money do they have for their trip?
📝 Answered - A father's age is 28 years old when Cindy's age is 2 years old. A father's age is 36 years old when Cindy's age is 10 years old. What is the father's age when Cindy is 18 years old? A) Write an equation that relates Cindy's age to her father's age. B) Determine if 42 is a solution to the equation. Show your work. C) Explain the meaning of your answer in part B.
📝 Answered - Ed spent 8.5% of his savings on lunch, which cost $5.25. How much did he have in savings before lunch?
📝 Answered - Samantha runs faster than Louie for five seconds.
📝 Answered - In a group of 75 fourth graders, 20% do not like hot chocolate. How many students like hot chocolate?
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