Give the order of the matrix, and identify the given element of the matrix.
; a34
A. 5 × 4; 14
B. 20; 5
C. 4 × 5; 4
D. 4 × 4; 9
Answer: C
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Write the augmented matrix for the system of linear equations.
a. 
b. 
c. 
d. 
Solve. Simplify the answer.Angie is wrapping a present for her nephew. She has a roll of wrapping paper that has 14 feet of wrapping paper on the roll. She uses 
feet to wrap the present. How many feet of wrapping paper are left on the roll?
A. 10
ft
B. 10
ft
C. 13
ft
D. 9
ft
Determine where the function is increasing and where it is decreasing.f(x) = -4x2 - 2x - 11
A. decreasing on 
increasing on 
B. increasing on 
decreasing on 
C. increasing on 
decreasing on 
D. increasing on 
decreasing on 
Solve the problem.Suppose that during a certain step in a chemical manufacturing process the amount of hydrogen chloride dissolved in a solution, measured in parts per million (ppm), is related to the elapsed time measured from the beginning of the step. Use the following table as a representation of this relationship. Make a scatterplot of the data. What is happening to the amount of hydrogen chloride in solution during this time frame?
A. The amount of hydrogen chloride dissolved
decreased as time elapsed.
B. The amount of hydrogen chloride dissolved
increased as time elapsed.
C. The amount of hydrogen chloride dissolved
increased as time elapsed.
D. The amount of hydrogen chloride dissolved
increased as time elapsed.