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°
Answer: D
Mathematics
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Evaluate the integral.
A. 
ln
- 
ln
+ C
B. 
ln
- 
ln
+ 
tan-1(et) + C
C. 
ln
- 
ln
+ 
tan-1 t + C
D. 
ln
+ 
ln
+ 
tan-1(et) + C
Mathematics
Solve the problem.If 5000 feet of fencing are used to enclose a rectangular field, the resulting area of the field is 
where x is the width of the pen. What is the maximum possible area of the pen?
A. 62,500 ft2 B. 31,250 ft2 C. 1,562,500 ft2 D. 1250 ft2
Mathematics
Find the derivative of the function.
?
?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Between x = 0 and x = 8, the largest value of the expression 
occurs where 
. Of the values of x that satisfy 
, which gives the maximum value of 
?
A. x = 2 B. x = 7 C. x = 6 D. x = 3
Mathematics