1) The cost for electricity varies directly with the amount of kilowatt-hours of electricity used. The cost for using 1,079 kilowatt-hours of electricity was $129.48. What was the cost for using 908 kilowatt-hours of electricity? a) $41.52 b) $153.86 c) $75.67 d) $108.96 2) The amount of water an electric dishwasher uses to wash dishes varies directly with number of loads of dishes. The dishwasher uses 32 gallons of water to wash 4 loads of dishes. How many gallons of water will the dishwater use to wash 10 loads of dishes?  a) 320 b) 80 c) 40 d) 65 3) The number of gift baskets Nikki can make varies directly with the amount of time she spends making baskets. She can make 4 baskets in 1/2 hour. How many baskets can Nikki make in 5 hours? a) 20 b) 30 c) 40 d) 50 4) The value of y varies directly with x. When y =75, x = 1/2. What is the value of y when x is 2 1/4? a) 84 3/8 b) 337 1/2 c) 16 2/3 d) 168 3/4 5) Direct Variation..... a) shows a relationship between y and x b) can be solved by making a proportion c) Both are correct

Direct Variation

由
列印
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?