Find the slope and y-intercept of the line.4x + y = -11
A. slope = -4; y-intercept = -11
B. slope = - 
; y-intercept = - 
C. slope = 4; y-intercept = -11
D. slope = - 
; y-intercept = - 
Answer: A
Mathematics
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Match the differential equation with the appropriate slope field.y' = y(y + 2)( y - 2)
A. 
B. 
C. 
D. 
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Simplify.
A. 12 B. not a real number C. 6 D. -6
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Solve.
- 
= 
A. 37 B. -31 C. 31 D. No solution
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Solve the problem.A conservation officer needs to know the width of a river in order to set instruments correctly for a study of pollutants in the river. From point A, the conservation officer walks 105 feet downstream and sights point B on the opposite bank to determine that ? = 50° (see figure). How wide is the river (round to the nearest foot)? 
A. 163 ft B. 125 ft C. 80 ft D. 88 ft
Mathematics