Solve the problem that involves probabilities with independent events.If you toss a fair coin 4 times, what is the probability of getting all heads?
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.A publisher spends 70,000 on a book for development, editing, and advertising. It costs the publisher 
per copy at the printer. Find the linear cost function to publish a book. If the publisher charges 
per copy, how many books must be sold to break even? (Round to the nearest unit.)
A. C(x) = 24.05x + 70,000 break-even = 5647 B. C(x) = 70,000x + 1.94 break-even = 1500 C. C(x) = 1.94x + 70,000 break-even = 2693 D. C(x) = 1.94x + 70,000 break-even = 3166
Simplify the rational expression.
A. x - 6
B. 
C. 
D. x + 6
Find the time (in days). Round to the nearest day.Principal: $8,620Rate: 8.5%Interest: $81.41
A. 60 days B. 40 days C. 41 days D. 11 days
Find the particular solution of the differential equation.
= 4xe2x; y = 6 when x = 0
A. y = 2xe2x - e2x + 7 B. y = 4xe2x - 2e2x + 8 C. y = 2xe2x + 6 D. y = 4xe2x - e2x + 7