Give the domain of the function.f(x) = 
A. [0, 19]
B. (-?, 19) ? (19, ?)
C. (-?, ?)
D. (-?, 19]
Answer: D
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Find the x-intercepts for the parabola whose equation is given. If the x-intercepts are irrational, round your answers to the nearest tenth.y = x2 - 5x + 1
A. x-intercepts: (-1, 0) and (5, 0)
B. x-intercepts: none
C. x-intercepts: 
D. x-intercepts: 
Solve the problem.Find the optimum number of batches (to the nearest whole number) of an item that should be produced annually (in order to minimize cost) if 280,000 units are to be made, it costs $1 to store a unit for one year, and it costs $340 to set up the factory to produce each batch.
A. 22 batches B. 14 batches C. 16 batches D. 20 batches
Given the perimeter and either the length or width of a rectangle, find the unknown measurement by using the appropriate formula.The perimeter is 32 inches and the width is 4 inches.
A. 14 inches B. 23 inches C. 12 inches D. 24 inches
Solve the problem using the table.Monthly Principal and Interest Payment per $1000 of Mortgage
Constance Hairston obtains a 30-year, $128,500 mortgage at 8% on a house selling for $154,000. Her monthly payment, including principal and interest, is $942.89. How much of the total cost will be interest?
A. $196,173.91 B. $232,033.66 C. $210,940.40 D. $274,221.60