Find the line of symmetry.f(x) = 
x2 + 4x + 
A. x = 4
B. x = -4
C. x = 5
D. x = -13
Answer: B
Mathematics
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Find the average value of the function over the given interval.y = 2 - x2; [-5, 4]
A. 
B. 
C. - 
D. - 5
Mathematics
Solve the problem.If v = -6i - 5j + k and w = -4i - 2j - k, evaluate v × w.
A. 3i - 2j + 32k B. -8i - 7j + 10k C. 7i - 10j - 8k D. -7i + 10j + 22k
Mathematics
Which property does the expression represent?4 × 2 = 2 × 4
A. Commutative Property of Multiplication B. Identity of Multiplication C. Associative Property of Multiplication D. Identity of Addition
Mathematics
The data in the figure below represents the number of stars earned by 140 performers in a talent competition.
How many performers earned more than the median number of stars?
A. 91 B. 30 C. 42 D. 49 E. none of these
Mathematics