Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (-25, 0), (25, 0);
F: (-20, 0), (20, 0)
B. V: (0, -25), (0, 25);
F: (0, -20), (0, 20)
C. V: (0, -25), (0, 25);
F: (0, -15), (0, 15)
D. V: (-25, 0), (25, 0);
F: (-15, 0), (15, 0)
Answer: D
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Solve.Doctors use the following formula to determine the amount of medicine to give a child under 12 years of age when the adult dosage is known.C = 
, where C is the child's dose, A is the age of the child, D is the adult dose.Find the adult dose if C = 0.08 grams and A = 5.
Fill in the blank(s) with the appropriate word(s).
Graph the linear inequality.0.3x + 0.4y ? -1.2
A. 
B. 
C. 
D. 
Determine whether the ordered pair is a solution for the equation.(1, -2); y = -2x
A. Yes B. No
Find the nth term of the geometric sequence.a = -2; r = 
A. an = 
(-2)n-1
B. an = -2 
n-1
C. an = -2 
n-1
D. an = -2 
n