Decide if the statement is true or false.cos ? increases in value as ? goes from 0° to 90°.
A. True
B. False
Answer: B
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Select the smaller of the two given numbers.
, 
A. 
B. 
Solve the given applied problems involving variation.At a fixed temperature, the resistance R of a wire varies directly as the length l and inversely as the square of its diameter d. If the resistance is 1.4 ohm when the diameter is 1 mm and the length is 280 cm, what is the resistance when the diameter is 4 mm and the length is 1870 cm?
A. 0.584 ohm B. 116.875 ohm C. 163.625 ohm D. 2.338 ohm
Find the derivative of y with respect to the appropriate variable.y = csch-1 
?
A. 
B. 
C. 
D. 
The demand equation for the Roland portable hair dryer is given by 
, where x (measured in units of a hundred) is the quantity demanded per week and p is the unit price in dollars. When is the demand unitary? (Hint: Solve 
for p).
?
A. 
B. 
C. 
D. 
E. 