Evaluate the integral.
dx
A. 8
+ 1 - 1
B. 
C. 8
+ 1
D. x
+ 1 + C
Answer: C
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Provide an appropriate response.Perform the operation and simplify your answer: 
+ 
What will be an ideal response?
Solve the problem using the elimination method.Two angles are supplementary, and one is 40° more than three times the other. Find the smaller angle.
A. 145° B. 75° C. 105° D. 35°
Solve.When making a telephone call using a calling card, a call lasting 4 minutes cost $1.20. A call lasting 13 minutes cost $3.00. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that relates the cost of a making a call, y, to the time x.
A. y = 0.2x - 10
B. y = 5x - 
C. y = -0.2x + 2
D. y = 0.2x + 0.4
Given that 
is an obtuse triangle, it follows that:
A. the three angle-bisectors meet in the exterior of
B. the three medians meet in the exterior of
C. the three altitudes meet in the interior of
D. the 3 perpendicular-bisectors of the sides of meet in the exterior of the triangle