Simplify the expression.13y + 7(y - 1)
A. 20y + 7
B. 91y - 7
C. 20y - 7
D. 20y2 - 7
Answer: C
Mathematics
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Find all the local maxima, local minima, and saddle points of the function.
A. f
= 20, saddle point; f
= 20, saddle point
B. f
= - 60, local maximum
C. f
= 20, saddle point
D. f
= 20, local minimum; f
= 20, local minimum
Mathematics
Find all solutions to the equation. Express the solution in degrees.cos x = -1
A. 360°n or 180° + 360°n B. 90° + 360°n or 270° + 360°n C. 360°n D. 180° + 360°n
Mathematics
Find the x- and y-intercepts of the graph.
A. (0, -3), (3, 0), (0, 1) B. (0, -3), (0, 3), (1, 0) C. (-3, 0), (0, 3), (1, 0) D. (-3, 0), (0, 3), (0, 1)
Mathematics
Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
A. 
B. t
C. t6
D. t5
Mathematics