Solve the problem.Anne and Nancy use a metal alloy that is 25.44% copper to make jewelry. How many ounces of a 25% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?
A. 78 oz
B. 80 oz
C. 27 oz
D. 22 oz
Answer: A
Mathematics
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Solve the logarithmic equation.log7x = -3
A. 
B. 2187
C. 343
D. 
Mathematics
Solve the problem.Suppose the current cost of gasoline is $3.07 per gallon. Find the current price index using the 1975 price as the reference value. In 1975, the cost of gasoline was 56.7 cents per gallon.
A. 250.3 B. 5.4 C. 541.4 D. 18.5
Mathematics
Write the set in set-builder notation.{1, 2, 3, 4, 5, 6}
A. {x|x is an integer less than 7} B. {x|x is a natural number and x ? 6} C. {x|x is a natural number} D. {x|x is a natural number and x < 6}
Mathematics
Subtract.14.500 - 8.300
A. 6.100 B. 22.800 C. 6.300 D. 6.200
Mathematics