Solve.The average of a student's three scores is 78. The first is 13 more than the second, and the sum of the first two is 9 more than twice the third. Find the student's score that is closest to the average score.
A. 75
B. 71
C. 77
D. 73
Answer: A
Mathematics
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Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.An animal species is introduced into a certain area. Its population is approximated by 
, where t represents the number of months since its introduction. Find the population of this species 6 months after its introduction into the area. Round answer to the nearest whole number.
A. 704 animals B. 240 animals C. 470 animals D. 74 animals
Mathematics
Convert the units.147 mg = 
g
A. 1.47 g B. 14,700 g C. 0.147 g D. 147,000 g
Mathematics
Determine if the equation x² + y² -25 = 0 defines y as a function of x . Explain your answer.
What will be an ideal response?
Mathematics