Solve the problem.A bookcase is to be constructed as shown in the figure below. The height of the bookcase is 4 feet longer than the length of a shelf. If 26 feet of lumber are available for the entire unit (including the shelves, but NOT the back of the bookcase), what values are possible for the length of a shelf?
A. length ? 3 feet
B. length ? 4.5 feet
C. length ? 11.0 feet
D. length ? 3 feet
Answer: A
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Solve the problem.Assume that the profit P made when t units are sold, t > 0, is given by P(t) = t2 - 23t + 132. For what values of t will there be a loss (that is, P < 0)?
A. There will be a loss when 0 units are sold. B. There will be a loss when 11 or 12 units are sold. C. There will be a loss when the number of units sold is between, but not including, 11 and 12. D. There will be a loss when fewer than 11 or more than 12 units are sold.
Factor the expression completely, if possible.x2 - 169
A. (x + 13)2 B. (x + 13)(x - 13) C. (x - 13)2 D. Does not factor
Find the x- and y-intercepts for the equation. Then graph the equation.3x - y = 5 
A. x-intercept: 
, y-intercept: (0, -5)
B. x-intercept: (-5, 0) , y-intercept: 
C. x-intercept: 
, y-intercept: (0, -5)
D. x-intercept: 
, y-intercept: (0, -5)
Graph the equation by plotting points.y = 9x
A. 
B. 
C. 
D. 