Solve the problem.An earthquake had an intensity 10 6.1 times more powerful than a reference level earthquake, or 
What was the magnitude of this earthquake on the Richter scale? 
A. 6.1
B. 3.9
C. 14
D. 16.1
Answer: A
Mathematics
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Graph the exponential function.f(x) = 3x + 1 
A. 
B. 
C. 
D. 
Mathematics
Find the reciprocal.
A. 0
B. 1
C. 7
D. 
Mathematics
Find the domain of the function.f(x) = ln (9x - x2)
A. 0 < x < 9 B. -9 ? x < 0 C. -9 < x < 9 D. x ? 9
Mathematics
Solve the problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 37 units of vitamin A, at least 8 units of vitamin B, and at least 26 units of vitamin C. The red vitamin pills cost 
each and contain 7 units of A, 1 unit of B, and 2 units of C. The blue vitamin pills cost 
each and contain 3 units of A, 1 unit of B, and 7 units of C. How many pills should the patient take each day to minimize costs?
A. 6 red and 2 blue B. 7 red and 1 blue C. 8 red and 0 blue D. 2 red and 6 blue
Mathematics