Solve the system by graphing. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x. 3x - 2y = 4-6x + 4y = 7
A. (2, 1)
B. Dependent, 
C. Inconsistent, ?
D. (1, 2)
Answer: C
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Solve the problem.If f(?) = sin ? and f(a) = - 
, find the exact value of f(-a).
A. 
B. - 
C. - 
D. 
Identify the sequence as arithmetic, geometric, or neither.an = 7n
A. Arithmetic B. Geometric C. Neither
For the function f(t) =  figure 1.png)
determine the average rate of change between the values t = a and t = a+h.
 figure 2.png)
Solve the problem.Suppose a tank contains 100 gallons of a solution of 10 lb of salt dissolved in water, which is kept uniform by stirring. Pure water is allowed to flow into the tank at a rate of 3 gallons per minute, and the mixture flows out at a rate of 2 gallons per minute. How much salt is present in the tank after 40 minutes?
A. Approx. 5.9 lb B. Approx. 6.9 lb C. Approx. 5.1 lb D. Approx. 8.3 lb