Give a formula for a piecewise-defined function f for the graph shown.
A.
f(x) = 
B.
f(x) = 
C.
f(x) = 
D.
f(x) = 
Answer: D
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Find all points where the function is discontinuous.
A. x = -2, x = 2 B. x = -2, x = 0, x = 2 C. None D. x = 0
Solve the problem.Consider the following simplified digital photograph that has a 3 × 3 grid with four gray levels numbered from 0 to 3. It shows a letter Y in black on a light gray background.
Let A be the 3 × 3 matrix that represents this figure digitally. Find the matrix which represents the negative image of the picture represented by A.
A. 
B. 
C. 
D. 
Name the property illustrated by the sentence.2(x + y) = 2x + 2y
A. Associative property of addition B. Commutative property of multiplication C. Multiplicative identity property D. Distributive property
Solve the problem.Mrs. Ito has $5842 in her checking account. How much is in the account after she writes a check for 
?
A. $5213 B. $6471 C. $6481 D. $5113