Determine whether the formula determines y as a function of x.y = 
A. No
B. Yes
Answer: B
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Solve the equation using the quadratic formula. Simplify irrational solutions, if possible.x2 + 7x + 3 = 0
A. 
B. 
C. 
D. 
Solve the problem.
Find the exact value of cos 2?.
A. - 
B. 
C. 
D. 
A large number of female llama were studied. It was found that this species of llama has a mean gestation period of 350 days with a standard deviation of 11 days. (Gestation period is defined as the time from conception to birth.) Use this to information to solve the problem.
What percent of llamas have gestation periods between 339 and 372 days?
A. 95% B. 63.5% C. 84% D. 81.5%
Solve the problem.A boat goes 160 miles downstream in the same time it can go 120 miles upstream. The speed of the current is 8 miles per hour. Find the speed of the boat in still water.
A. 28 mph B. 56 mph C. 48 mph D. 64 mph