Use a cubic or quartic regression (as specified) to fit a curve through the points given in the table. Round to the nearest hundredth.
(Quartic)
A. y ? -0.01x4 - 0.27x3 + 1.94x2 + 5.70x - 1.00
B. y ? 0.01x4 + 0.22x3 - 1.94x2 - 5.72x - 1.00
C. y ? -0.01x4 + 0.27x3 - 1.94x2 + 5.70x - 1.00
D. y ? -0.02x4 + 0.22x3 + 1.96x2 - 5.72x - 1.00
Answer: C
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.y = 
, y = -x + 6
A. 20?
B. 16?
C. 
?
D. 72?
Take west to be the positive direction. You are driving in a westerly direction up a straight road. You pass a sign that says Elevation 1883 feet. Also, 5 horizontal miles further you see a sign that says Elevation 3350 feet. What is the slope of the road you are driving on? ?
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Solve the problem.A reservation clerk worked 15.3 hours one day. She spent twice as much time entering new reservations as she did verifying old ones and one and a half as much time calling to confirm reservations as verifying old ones. How much time did she spend entering new reservations?
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A. f(x) = 
x - 2
B. f(x) = 
x + 4
C. f(x) = 
x - 2
D. f(x) = 
x + 3