Find the sum without the use of a number line.-9 + 2
A. 11
B. -11
C. -7
D. 7
Answer: C
Mathematics
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Solve the problem.A bacterial culture has an initial population of 10,000. If its population declines to 4000 in 6 hours, what will it be at the end of 8 hours? Assume that the population decreases according to the exponential model.
A. 2530 B. 1474 C. 2947 D. 3000
Mathematics
Given the side lengths of a right triangle, find the indicated value. adj = 5, hyp = 
Find sin ?.
A. sin ? = 
B. sin ? = 
C. sin ? = 
D. sin ? = 
Mathematics
Plot the point given in polar coordinates.
A. 
B. 
C. 
D. 
Mathematics
Perform the indicated operations.4 + 30 ? 5 - (-28)
A. 126 B. 198 C. 67 D. 182
Mathematics