Determine whether the lines are parallel, perpendicular, or neither.f(x) = -2x - 7g(x) = 2x + 4
A. neither
B. perpendicular
C. parallel
Answer: A
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Express the number 
in standard notation.
?
A. 0.000908 B. 0.000908 C. 9,080.000 D. 90,800.000
Find the vertex and axis of symmetry of the graph of the function.f(x) = -2x2 + 4x - 9
A. (-2, -25) ; x = -2 B. (1, -7) ; x = 1 C. (2, -13) ; x = 2 D. (-1, -15) ; x = -1
Evaluate the radical expressions or indicate that the root is not a real number.
A. 243 B. 3 C. -3 D. Not a real number
Solve the problem.The value y of a machine (in dollars) is known to depreciate linearly with time x (measured in years from the time it was bought new). Suppose that y is related to x by the equation 
(a) Sketch the graph of this linear equation for 0 ? x ? 10.(b) What is the value of the machine when it is 5 years old?(c) What is the economic interpretation of the y-intercept of the graph?(d) When will the value of the machine reach the scrap value of $400??
What will be an ideal response?