List the numbers in set B that belong to the indicated set.B = 
Irrational numbers
A. 
, 
, 0.55, 2?
B. 
, 
, 2?
C. 
, 2?
D. 
, 
Answer: C
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Factor out a factor with a negative coefficient.-4x2 - 12x
A. 4(-x2 + 3x) B. -4x(x + 3) C. -4x(x - 3) D. 4(x2 - 3x)
A cardiac monitor is used to measure the heart rate of a patient after surgery. It compiles the number of heartbeats after t minutes. When the data in the table are graphed, the slope of the tangent line represents the heart rate in beats per minute. The monitor estimates this value by calculating the slope of a secant line. Use the data to estimate the patient's heart rate after 42 minutes using the secant line between the points with t=38 and t=42.
Select the correct answer.
a. 74
b. 80
c. 85
d. 70
e. 76
f. 75
Find the distance between the points, and find the midpoint of the line segment joining them.(?, 0) and (?/4, 1)
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Solve.
A. (1, 8), (3, 18) B. (1, 3) C. (-1, -2), (-3, -12) D. (-1, 8), (-3, 18)