An after-shave lotion is 40% alcohol. If you have 15 fluid ounces of the lotion, how much water must be added to reduce the mixture to 30% alcohol?
?
__________ ounces of water
Fill in the blank(s) with the appropriate word(s).
Answer: 5
Mathematics
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Use the counting principle to obtain the answer.The frequency setting for a garage door opener is determined by the positions of ten switches, each of which can be set to a "+" or "-" position. In how many ways can the switches be set?
A. 100 B. 1144 C. 59,049 D. 1024
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Solve the compound linear inequality graphically. Write your answer in interval notation. -5 < 3x + 4 ? 7
A. [-3, 1] B. (-3, 1] C. [-3, 1) D. (-3, 1)
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