Write the underlined phrase with the requested approximation in scientific notation.An airline estimated that 
Round this number to the nearest ten million and write a sentence indicating the approximation in scientific notation.
A. The total number of gallons of gas consumed was approximately 2.47 × 1010.
B. The total number of gallons of gas consumed was approximately 2.46 × 1010.
C. The total number of gallons of gas consumed was approximately 2.47 × 109.
D. The total number of gallons of gas consumed was approximately 2.46 × 109.
Answer: C
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A. -12 B. 130 C. 80 D. -90
Suppose the point (2, 4) is on the graph of y = f(x). Find a point on the graph of the given function.f(x) + 8
A. (-6, 4) B. (2, -8) C. (10, 4) D. (2, 12)
Find the maximum or minimum value of the objective function, subject to the constraints graphed in this feasible region. 
z = x + 7y. Find maximum.
A. Maximum 18 B. Maximum 30 C. Maximum 24 D. Maximum 37
Use the fundamental identities to find the value of the trigonometric function.Find cot ? if tan ? = 
and ? is in quadrant III.
A. - 
B. - 
C. 
D. 