Sec 7.4-Focus - Section 7.4 Focus Exercises(These need to...

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Rational Applications: Work Problems page 7.4 - 17 Section 7.4 Focus Exercises (These need to be done on a separate piece of paper.) For each, set up a legend, use the chart outlined in this section, and write a sentence answering the question. Type 1 : 1. For the sake of flood control, each year the lake behind a dam must be lowered. Sometimes, only the east pump is used; it can lower the water level 3 feet every 8 hours. Sometimes, only the west pump is used; it can lower the lake’s level 1 foot every four hours. Occasionally, both pumps must be used. How long would it take to lower the lakes level 15 feet if both pumps are used at the same time? 2. It’s the 1950’s and Nicholas and Marilyn are addressing invitations to the junior class picnic. Nick, as he prefers to be called, can address 2 every minute whereas Marilyn, no not Monroe, can address 3 every 2 minutes. How long will it take them to address all 140 invitations? Also, who is Nick planning to ask to go with him to the picnic? And, do you think Marilyn should dye her hair blonde
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Sec 7.4-Focus - Section 7.4 Focus Exercises(These need to...

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