The following table shows the gross national product G, in trillions of dollars, t years after 2005. Use linear regression to model G as a function of t.
t 0 1 3 5 G 12.74 13.59 14.27 14.62?
?
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Write the expression with positive exponents only. Then simplify, if possible.
A. 
B. 1
C. 27
D. 
Mathematics
Approximate f(x) to four decimal places.f(x) = 3.6e-2.1x, x = -1.9
A. -0.0666 B. -194.5976 C. 194.5976 D. 0.0666
Mathematics
Evaluate the expression using the given values.-8xy + 9y - 4
x = 5, y = -3
A. 89 B. 97 C. -151 D. 93
Mathematics
Solve the system of equations by the substitution method.y = 
x - 20y = 
x - 46
A. {(60, -10)}
B. {(60, 10)}
C. 
D. {(120, 0)}
Mathematics