Use the midpoint formula to make the requested estimation.A car is moving at a constant speed on the highway. After 1 hour the car passes the 12-mile marker and after 7 hours the car passes the 294-mile marker. What mile marker does the car pass after 4 hours?
A. 153-mile marker
B. 159-mile marker
C. 155-mile marker
D. 147-mile marker
Answer: A
Mathematics
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Find the sum of the series by recognizing how it is related to something familiar.
A. 
B. x3e-4x
C. 
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Find a linear model for the following data table. Round the slope to three decimal places, if necessary. x 4 5.67 7.34 9.01 ?y 6 12.6 19.2 25.8?
A. 
B. ?
C. ?
D. ?
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Find the curvature of the curve r(t).r(t) = (10 + 9 cos 5t) i - (1 + 9 sin 5t)j + 4k
A. ? = 
B. ? = 
C. ? = 
D. ? = 9
Mathematics