Determine if the relation is a function. Assume x is the independent variable.{(-3, 7), (2, 4), (4, -3), (8, -2)}
A. Yes
B. No
Answer: A
Mathematics
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Solve.A construction crew replaced 
mile of sewer line in the process of updating a section of a road. Another crew replaced 
mile of sewer line while working on the same project. How much longer was the sewer line that the second crew replaced?
A. 
mi
B. 
mi
C. 
mi
D. 
mi
Mathematics
Solve the system of equations by the elimination method.0.3x + 0.5y = -1.2 x - 0.9y = 3.7
A. (1, -3) B. no solution C. (-3, 1) D. (0.1, -0.3)
Mathematics
Find a unit vector in the direction of u.
u = 
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the inequality and graph the solution on a number line.x2 - 4x - 5 ? 0
A. 
B. 
C. 
D. 
Mathematics