Solve the problem.If 5 apples in a barrel of 25 apples are rotten, what is the expected number of rotten apples in a sample of 2 apples?
A. 0.33
B. 0.4
C. 0.63
D. 1
Answer: B
Mathematics
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Evaluate the expression.-73
A. 21 B. -21 C. -343 D. 343
Mathematics
Solve the problem.For a culture of 30,000 bacteria of a certain strain, the number of bacteria N that will survive x hours is modeled by the formula N = 3000
. After how many hours will 27,000 bacteria survive?
A. 73 hr B. 19 hr C. 91 hr D. 81 hr
Mathematics
Select the formula that best models the data in the table. 
A. y = x + 5
B. y = x - 5
C. y = 
D. y = 5x
Mathematics
Translate each graph to an inequality using the variable x.
A. x < -4.7 B. x ? -4.7 C. x > -4.7 D. x ? -4.7
Mathematics