Solve the problem.What is the coefficient of a7c3 in the expansion of (a + 2b - 3c)10?
A. 960
B. -3240
C. -720
D. 120
Answer: B
Mathematics
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Assume that the sequence converges and find its limit.a1 = 3, an + 1 = 
A. 9 B. 3 C. 1 D. -3
Mathematics
The graph of an exponential function is given. Match the graph to one of the following functions.
A. f(x) = 5x B. f(x) = 5-x C. f(x) = -5-x D. f(x) = -5x
Mathematics
Determine whether there is sufficient information for solving a triangle, with the given combination of angles and sides, by the law of sines.a, A, and C
A. Yes B. No
Mathematics
Solve the system by substitution. x + 2y = 3 5x + 2y = 31
A. ? B. {(8, -3)} C. {(2, 7)} D. {(7, -2)}
Mathematics