Evaluate the expression for the given replacement values.2x - y
for x = 7, y = -8
A. 17
B. 3
C. 6
D. 22
Answer: D
Mathematics
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Find the sum of all real solutions of the equation.
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A. 7 B. 2 C. 5 D. 0 E. None of the above
Mathematics
Solve the problem.Alex and Juana went on a 100-mile canoe trip with their class. On the first day they traveled 29 miles. What percent of the total distance did they canoe?
A. 0.29% B. 29% C. 300% D. 3%
Mathematics
Factor completely. If the polynomial cannot be factored, write "prime."x2 - 10xy + 25y2
A. (x - 5y)2 B. Prime C. (x - 5y)(x + 5y) D. (x + 5y)2
Mathematics
Differentiate implicitly to find 
.
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A. 
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B.
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C.
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D.
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E.
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Mathematics