Solve the equation.
= 
A. 
B. 
C. {4}
D. {16}
Answer: C
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Write the number as indicated.In 2003, a large corporation earned approximately $5,400,000,000. Write the number in words.
A. Five billion, four hundred thousand dollars B. Five billion, four million dollars C. Five billion, four hundred million dollars D. Five million, four thousand dollars
Find the indicated term of the geometric sequence.a = 6, r = 6; Find the 4th term.
A. 1296
B. 
C. 216
D. 46,656
Graph the function.f(x) = 5
A. 
B. 
C. 
D. 
Solve the problem.The concentration of a certain gas molecule in the atmosphere serves as an indicator of industrial air pollution. The data in the following table show the relationship of the estimated concentration of the molecule in the atmosphere, in parts per billion (ppb), to the year.
Take 1985 as year zero, and determine the linear, quadratic, or cubic function that best fits the data.
A. f(x) = -0.003x2 + 0.12x + 2.19 B. f(x) = -0.002x2 + 0.12x + 2.19 C. f(x) = 0.00001x3 - 0.003x2 + 0.14x + 2.16 D. f(x) = 0.002x + 2.90