Find the domain of the logarithmic function.f(x) = log9(x + 2)
A. (2, ?)
B. (-?, 0) or (0, ?)
C. (-2, ?)
D. (9, ?)
Answer: C
Mathematics
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Combine like terms.-10y2z + 3xy2 - 13y2z + 12
A. -3xy2 + 23y2z + 12 B. -3xy2 - 23y2z + 12 C. 3xy2 - 23y2z + 12 D. 3xy2 + 23y2z + 12
Mathematics
Find the indicated sum.
A. 
B. 
C. 
D. 
Mathematics
Radium - 226 has a half-life of 1600 years. Suppose we have a 300 g sample. (a) Find a formula for the mass remaining after t years. (b) How much of the sample remains after 200 years? (c) After how long will only 20 g remain?
What will be an ideal response?
Mathematics
Solve.Let f(x) = 3x2 + 3x - 1. Find all x for which f(x) = 0.
A. 
B. 
C. 
D. 
Mathematics