Graph.y = 0.4x - 7
A. 
B. 
C. 
D. 
Answer: D
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Write a matrix equation equivalent to the system of equations. 8w + 7x - 2y - z = -8 10x + 10y = -7-10w - 5x - y - 7z = 10 w - 8x + 10z = 10
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Find all points where the function is discontinuous.
A. x = 0 B. x = -2, x = 2 C. None D. x = -2, x = 0, x = 2
A cleaning process is removing salt from a pool. The amount S, in pounds, of salt remaining after t hours is given in the following table. Use exponential regression to model the amount of salt remaining as a function of time. Round your answer to two decimal places. t 1.38 4.99 8.95 12.60 15.70 S 23.62 12.48 7.10 3.41 2.10?
A. 
B. ?
C. ?
D. ?
Solve the inequality and graph the solution.a + 3 < 11
A. a ? 8
B. a < 8
C. a > 8
D. a ? 8
