What are the values of x and y to satisfy the following equations?
x + y = 4; 3x - 2y = 7
a. x = 1 y = 3
b. x = -1 y = -3
c. x = -3 y = 1
d. x = 3 y = -1
e. x = 3 y = 1
e. x = 3 y = 1
Mathematics
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Factor the expression completely.
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A. 
B. 
C. 
D. 
E. 
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Simplify the expression.
?
?
A.
B.
C.
D.
E.
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Graph f(x) = x² + 2x – 3.
What will be an ideal response?
Mathematics
Consider the problem of a vibrating string, tightly-stretched between 
and 
, with a fixed initial position, 
, and zero initial velocity.
The mathematical problem for the deflection, 
, is (with 
, 
)
Select the correct answer.
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A. 
B. 
C. 
D. 
E. 
Mathematics