Which equation matches the given calculator-generated graph and description? Decide without using your calculator.
Ellipse; foci (±4, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
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Use the substitution formula to evaluate the integral.
A. 7 B. 14 C. 28 D. -7
In the following question(s), FN represents the Nth Fibonacci number.2F9 - 3 =
A. 6 B. 16 C. 12 D. 65 E. none of these
Solve the problem.Mary finds 9 fish at a pet store that she would like to buy, but she can afford only 5 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?
A. 3024; 1680 B. 15,120; 1680 C. 126; 70 D. 7560; 840
Find the focus and directrix of the parabola with the given equation.y2 = 24x
A. focus: (6, 0) directrix: x = -6 B. focus: (6, 0) directrix: x = 6 C. focus: (0, -6) directrix: y = -6 D. focus: (0, 6) directrix: y = -6