Find the equation of the normal line to the indicated curve at the given point.y = 
at 
A. 125x + 60y + 36 = 0
B. 25x + 60y + 36 = 0
C. 25x - 60y + 36 = 0
D. 125x - 60y + 36 = 0
Answer: D
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Find the series' radius of convergence.
A. ?, for all x B. 0 C. 2 D. 1
Simplify. Assume that all variables represent positive real numbers.
- 
A. (5x3y2 + 4x4y)
B. (5x6y4 - 4x9y)
C. (5x3y2 + 4x4y)
D. (5x3y2 - 4x4y)
Use the Laws of Exponents to simplify. Write the answer with positive exponents. All variables are nonzero.(-5x4y-5)(3x-1y)
A. 
B. 
C. 
D. -15x3y6
Find the probability.The table lists the eight possible blood types. Also given is the percent of the U.S. population having that type.
Let E be the event that a randomly selected person in the U. S. has type B blood. Let F be the event that a randomly selected person in the U. S. has RH-positive blood.Find P(F|E).
A. 0.818 B. 0.340 C. 0.720 D. 0.107