Sketch the graph and show all local extrema and inflection points.y = ex - 4e-x - 5x
A. Local minimum (2, -2)
No inflection point
B. Local maximum (0, -3)
Local minimum (ln 4, 3 - 5 ln 4)
No inflection point
C. Local maximum (0, -3)
Local minimum (ln 4, 3 - 5 ln 4)
Inflection point (
ln 4, - 
ln 4)
D. Local minimum (
ln 4, - 
ln 4)
No inflection point
Answer: C
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Decide if the answer is reasonable or unreasonable by rounding the numbers and estimating the answer. If the answer is not reasonable, find the correct answer.801.3 ÷ 22.3 = 35.93
A. Unreasonable, should be 0.3593 B. Reasonable C. Unreasonable, should be 359.3 D. Unreasonable, should be 3.593
Divide. Be sure your answer is simplified.
÷ 
A. 
B. 
C. 
D. 
Use the quadratic formula to solve the equation.
+ x + 
= 0
A. {-16 + 
}
B. {8 - 
, 8 + 
}
C. {8 + 
}
D. {-8 - 
, -8 + 
}
A lawn sprinkler is located at the corner of a yard. The sprinkler is set to rotate through 90
and project water out 50 feet. What is the area (rounded to three significant digits) of the yard watered by the sprinkler?
?
A. 1,960 feet2 B. 2,000 feet2 C. 1,940 feet2 D. 1,990 feet2 E. 1,970 feet2