Simplify the expression. Write your answer without negative exponents. Whenever an exponent is negative or zero, assume that the base is not zero.
A. 
B. 
C. 
D. 9
Answer: A
Mathematics
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Find all real-number solutions. Round your answer to the second decimal place, if necessary. b2 = 49
A. ±98 B. ±7 C. ±24.5 D. No real-number solution
Mathematics
Find the vertex, focus, and directrix of the parabola with the given equation.(y + 2)2 = 20(x + 3)
A. vertex: (-2, -3) focus: (3, -3) directrix: x = -7 B. vertex: (3, 2) focus: (8, 2) directrix: x = -2 C. vertex: (-3, -2) focus: (-8, -2) directrix: x = 2 D. vertex: (-3, -2) focus: (2, -2) directrix: x = -8
Mathematics
Use the graph to answer the question.Is f continuous at x = 4?
A. Yes B. No
Mathematics
Find a formula for the sum of the first n terms of the sequence.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics