Solve the problem.The price of a certain commodity is a function of supply and demand. The table below shows the price of the commodity per barrel between 2012 and 2017. Find the average annual rate of change between 2013 and 2015.
A. $7.00 per year
B. -$7.00 per year
C. $2.50 per year
D. -$14.00 per year
Answer: B
Mathematics
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Solve by the method of elimination by substitution.0.4x + 0.6y = -2.6x - 0.5y = -0.5
A. x = -0.2, y = -0.3 B. x = -2, y = -3 C. x = -3, y = -2 D. Inconsistent
Mathematics
Find values for the variables so that the matrices are equal.
= 
A. x = -2; y = -2 B. x = 1; y = -2 C. x = 1; y = 1 D. x = -2; y = 1
Mathematics
Find anand a6 for the following arithmetic sequence.a1 = -50, d = -3
A. an = -50 + 3n, a6 = -32 B. an = -50 - 3n, a6 = -68 C. an = -50 - 3(n - 1), a6 = -65 D. an = -50 + 3(n - 1), a6 = -35
Mathematics
Graph the function.f(x) = x2 - 2
A. 
B. 
C. 
D. 
Mathematics