1. A girl scout troop uses 14 flashlight batteries on a three-night camping trip. If they are planning a seven-night trip, how m
any batteries should they bring? 2. Three pumps can remove a total of 1700 gallons of water per minute from a flooded mineshaft. If engineers want to remove at least 5500 gallons per minute, how many pumps will they need operating?
3.Geologists in Antarctica find an average of 7 meteorite fragments in every 500 tons of gravel they sift through. How much gravel must they sift through in order to get 100 fragments?
4. A case of 24 tennis balls weighs 3 pounds. How much would a shipment of 2560 tennis balls weigh?
5. A cookie recipe calls for 3 eggs and makes 4 dozen cookies.
a. How many (dozen) cookies could you make with a dozen eggs?
b. How many eggs would you need to make 18 dozen cookies?
6. A map of Connecticut is drawn to a scale where 2 inches on the map represents 35 miles.
a. If Greenwich and Stonington are 105 miles from each other, how far apart do they appear on the map?
b. On this same map the road from Mystic to Hartford is 11⁄2 inches long. How far apart are Mystic and Hartford?
7. Will’s Widget Works can produce 21⁄2 tons of widgets in an 8 hour work day.
a. How many widgets can Will’s Widget Works produce between 9 am and noon?
b. McGee Manufacturing, Inc. needs to order 17 tons of widgets. How many work days will it take Will’s Widget works to fill this order?
8. The ratio of boys to girls in Ms. Alper’s math classes is 5 ∶ 7. If there are 60 students in all of her classes, how many are boys?
The correct answer is option A. Erica is correct in saying that the two lines are not necessarily the same and we should also look at the y-intercepts before determining how many solutions there were. <span>Two lines with equal slopes could be the same line, but only if they have the same y-intercept.</span>
