Evaluate the function at the given values of the variable.f(x) = x2 + 5
a. f(-4)
b. f(-6)
A. 80, 180
B. -40, -60
C. -3, -7
D. 21, 41
Answer: D
Mathematics
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A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
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Simplify the expression using the order of operations. Write the answer as an improper fraction where appropriate.
A. 
B. 
C. 
D. 
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The augmented matrix is in row-echelon form and represents a system of linear equations. Solve the system using back-substitution.
A. ? B. {(15, 7)} C. {(16, 9)} D. {(17, 9)}
Mathematics