A certain calling card costs 6.8 cents per minute to make a call, rounded up to the nearest minute. However, when the card is used at a pay phone, there is an additional 68 cent connection fee. If 
is the charge from a pay phone for a call lastingtminutes, create a table of charges for calls lasting close to 1 minute and use it to find the following limit, if it exists. Round your answer to the nearest cent.
?
A. $0
B. $0.68
C. $0.75
D. $0.82
E. does not exist
Answer: C
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Solve the problem.A private shipping company will accept a box for domestic shipment only if the sum of its length and girth (distance around) does not exceed 120 in. Suppose you want to mail a box with square sides so that its dimensions are 
and it's girth is 
What dimensions will give the box its largest volume?
A. 40 in. × 20 in. × 40 in.
B. 20 in. × 20 in. × 100 in.
C. 
in. × 
in. × 20 in.
D. 20 in. × 20 in. × 40 in.
Find an upper bound for the magnitude |E| of the error in the approximation f(x, y) ? L(x, y) at the given point over the given region R.
at 
; R: |x - 1| ? 0.1, |y - 1| ? 0.1
A. |E| ? 0.0176 B. |E| ? 0.0139 C. |E| ? 0.0113 D. |E| ? 0.0093
Convert from one measure to the other.3
gallons to pints
A. 14
pints
B. 7
pints
C. 58 pints
D. 29 pints
The demand equation for the Sicard wristwatch is given by 
, 
, where x (measured in units of a thousand) is the quantity demanded each week and p is the unit price in dollars. Find the rate of change of the quantity
demanded of the wristwatches with respect to the unit price when the unit price is $10. Round your answer to the nearest whole number.
?
A. 
wristwatches/(dollar price increase)
B. 
wristwatches/(dollar price increase)
C. 
wristwatches/(dollar price increase)
D. 
wristwatches/(dollar price increase)