Solve the problem.An airplane travels 800 miles against the wind in 4 hours, and makes the return trip with the same wind in 2 hours. Find the rate of the wind.
A. 300 mph
B. 400 mph
C. 100 mph
D. 200 mph
Answer: C
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Use natural logarithms to solve the exponential equation symbolically.4(7 + 3x) = 
A. x = 
+ 
B. x = 
- 7
C. x = - 
- 
D. x = - 
+ 21
At a time t seconds after an object is tossed vertically upward, it reaches a height s in feet given by the equation:
?
?
What is the maximum height reached by the object?
?
Please enter your answer as a number without the units.
Fill in the blank(s) with the appropriate word(s).
Find the area of the shaded region. (Assume that given measurements are exact, and round approximate answers to the nearest tenth of a square unit, if required.)
?
, 
?
__________ ft2
Fill in the blank(s) with the appropriate word(s).
Subtract.4x4?+ 7x3?+ 5
A. 3x4 + 9x3 + x2 - 8x + 5 B. 3x4 + 5x3 - x2 - 8x + 5 C. 3x4 + 9x3 - x2 + 8x + 5 D. 3x4 + 9x3 + x2 - 3x