Evaluate the expression without a calculator.(-5)-4
A. -625
B. 
C. 625
D. - 
Answer: B
Mathematics
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Express the exercise as a system of linear equations, then find the solution. Use a calculator where appropriate.A flat rectangular piece of aluminum has a perimeter of 64 inches. The length is 16 inches longer than the width. Find the width.
A. 8 in. B. 32 in. C. 40 in. D. 24 in.
Mathematics
The graph of a polynomial function is given.
?
?
?
Find the coordinates of all local extrema.
?
A. 
B. ?
C. ?
D. ?
E. ?
Mathematics
Find the coordinates of the vertex for the parabola defined by the given quadratic function.f(x) = 4x2 - 8x + 7
A. (-2, 39) B. (1, 3) C. (2, 15) D. (-1, 19)
Mathematics
Find the root.-
A. 10 B. 100 C. -10 D. Not a real number
Mathematics