Factor completely.y2 - 25
A. (y + 5)(y - 5)
B. (y - 5)(y - 5)
C. (y + 25)(y - 25)
D. (y2 + 5)(y2 - 5)
Answer: A
Mathematics
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Factor:
Mathematics
Perform the indicated row operation on the given augmented matrix.R1 ? R2: 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.
Karen is driving a delivery truck on a straight road. The graph shows the distance y in kilometers that Karen is from Store A after x hours. (i) Find the slope-intercept form of the equation of the line. (ii) Use the graph to estimate the y-coordinate of the point 
that lies on the line.
A. y = 5x + 60; (6, 90) B. y = -5x + 60; (6, 30) C. y = 5x - 60; (6, -30) D. y = -10x + 60; (6, 0)
Mathematics
Solve the system by substitution.
x + 
y = 4
x - 2y = 21
A. {(-6, -8)} B. {(6, -8)} C. {(-6, 8)} D. {(6, 8)}
Mathematics