For the function, find the average rate of change of f from 1 to x: 
f(x) = 4x
A. 3
B. 
C. 4
D. 0
Answer: C
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Use the 68-95-99.7 rule to solve the problem.Scores on a test are normally distributed with a mean of 106 and a standard deviation of 20. What percentage of scores are greater than 126?
A. 68% B. 84% C. 16% D. 32%
Complete the ordered pairs. Then graph the equation.y = 2x - 4(0, ), ( , 0), (2, )
A. (0, -4), (-2, 0), (2, -8)
B. (0, -4), (2, 0), (2, 0)
C. (0, 4), (-2, 0), (2, 8)
D. (0, -4), (-8, 0), (2, -3)
Solve the system of equations.x - y + z = 8x + y + z = 6x + y - z = -12
A. {(2, -1, -9)} B. {(-2, -1, -9)} C. {(2, -1, 9)} D. {(-2, -1, 9)}
Solve the problem.The polynomial 
measures the concentration of a dye in the bloodstream x seconds after it is injected. Does the concentration increase between 14 and 15 seconds?
A. No B. Yes