Identify the degree of the polynomial and list its coefficients.3x2 - 7x + 9
A. degree: 2
coefficients: 3, -7, 9
B. degree: 2
coefficients: 3, 7, 9
C. degree: 3
coefficients: 3, -7, 9
D. degree: 3
coefficients: -7, 9
Answer: A
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The following table shows the number C, in millions, of cars sold in the U.S. t years after 2005. Based on the regression equation, how would you expect sales to be affected over a 5-year period? t 0 1 3 5 C 5.56 5.46 5.27 4.56? ?
A. Sales would decrease by 0.19 million cars. B. Sales would increase by 0.95 million cars. C. Sales would increase by 0.19 million cars. D. Sales would decrease by 0.95 million cars.
Find the inverse of the matrix, if possible.
A. 
B. 
C. 
D. No inverse
Find the arc length parameter along the curve from the point where t = 0 by evaluating 
r(t) = (etcos t)i + (etsin t)j + 5etk
A. 3
et - 
B. 
et - 
C. 
et - 3
D. 3
tet - 3
Find the derivative.y = x1/5
A. 
x-1/5
B. 
x-4/5
C. - 
x-6/5
D. 
x6/5