Use power regression to model the following data. Use two digits of accuracy for the coefficient and for the power.
x 1 3 4 7 8 y 6.24 2.78 2.85 3.65 3.68?
A. 
B. ?
C. ?
D. ?
Answer: A
Mathematics
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Approximate the surface area of the figure using 3.14 for ?. If necessary, round to the nearest tenth.
A. 1796.1 m2 B. 708.1 m2 C. 1226.2 m2 D. 354 m2
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Solve the equation. Round to the nearest thousandth.73x = 8(x + 1)
A. {0.553} B. {1.069} C. {-15.573} D. {2.069}
Mathematics
Find the common ratio.
, 
, 
, 
, . . .
A. 
B. 5
C. 
D. 
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Graph the function.Assume it costs 25 cents to mail a letter weighing one ounce or less, and then 20 cents for each additional ounce or fraction of an ounce. Let L(x) be the cost of mailing a letter weighing x ounces. Graph y = L(x). Use the interval (0, 4].
A.
B. 
C.
D. 
Mathematics