Answer the question.A rectangular piece of cardboard measuring 21 inches by 48 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. What are the restrictions on x?
A. 0 < x < 21
B. 0 < x < 48
C. 0 < x < 10.5
D. 0 < x < 24
Answer: C
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The graph of an exponential function is given. Match the graph to one of the following functions.
A. f(x) = 5x - 1 B. f(x) = 5x - 1 C. f(x) = 5x + 1 D. f(x) = 5x
The projected number of wireless subscribers y (in millions) from the year 2000 through 2006 is summarized in the accompanying table:
Year, x0123456Subscribers, y90.4100.0110.4120.4130.8140.4150.0?
(Here, 
corresponds to the beginning of 2000.)Find an equation of the least-squares line for these data. Please round the coefficients in your equation to two decimal places. Use the result to estimate the projected number of wireless subscribers at the beginning of 2011. Round the answer to three decimal places.
?
A. 
million
B. 
million
C. 
million
D. 
million
Express as the logarithm of a single expression. Assume that variables represent positive numbers.logcm + logcn
A. logcmn
B. logc(m + n)
C. logc
D. logcm ? logcn
Graph the rational function and find the intercepts.g(x) = 
A. x-intercept: 0. y-intercept: 5
B. x-intercept: 0. y-intercept: 0
C. x-intercept: 0. y-intercept: 0
D. x-intercept: 0. y-intercept: -1