Find the value of the expression using the given values.
?x = 7, y = 5
A. 
B. 
C. 
D. 1
Answer: A
Mathematics
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Solve the equation by the zero-factor property.x2 + 2x - 15 = 0
A. {3, 5} B. {-3, 5} C. {-5, -3} D. {-5, 3}
Mathematics
Answer the question about the given function.Given the function f(x) = -4x2 - 8x - 4, list the y-intercept, if there is one, of the graph of f.
A. -16 B. -12 C. -4 D. 0
Mathematics
Give a formula for a piecewise-defined function f for the graph shown.
A.
f(x) = 
B.
f(x) = 
C.
f(x) = 
D.
f(x) = 
Mathematics
Solve the problem.Michael's bank contains only nickels, dimes, and quarters. There are 57 coins in all, valued at $5.15. The number of nickels is 7 short of being three times the sum of the number of dimes and quarters together. How many dimes are in the bank?
A. 11 B. 10 C. 41 D. 6
Mathematics