Solve the problem.Fill in the blank.6
+ 4
= 
is an example of the ___________ property.
A. inverse
B. commutative
C. distributive
D. associative
Answer: C
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In the following question(s), FN represents the Nth Fibonacci number.If F500 = a and F501 = b, then F505 =
A. a + 2b. B. 2a + 3b. C. 3a + 5b. D. a + b. E. none of these
Graph the system of inequalities.3x + y > 63x + y < 1
A. 
B. 
C. 
D. No solution
Provide an appropriate response.An improper fraction has a value equal to or less than 1.
A. True B. False
A 100-gallon tank is full of a solution containing 25 pounds of a concentrate. Starting at time 
distilled water is admitted to the tank at the rate of 5 gallons per minute, and the well-stirred solution is withdrawn at the same rate.
(a) Find the amount Q of the concentrate in the solution as a function of 
by solving the differential equation 
(b) Find the time required for the amount of concentrate in the tank to reach 15 pounds.
A. a.
b.
min
?
B. a.
b.
min
?
C. a.
b.
min
?
D. a.
b. min
?
E. a.
b. min
?