Find the x- and y-intercepts. If no x-intercepts exist, state so.f(x) = 2x2 - 19x + 42
A. (7, 0), (3, 0), (0,42)
B. (7, 0), (3, 0), (0,-42)
C. (6, 0), (- 
, 0), (0,-42)
D. (6, 0), (
, 0), (0,42)
Answer: D
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Solve the system. x + y - 2z = 83x+ z = -62x - y + 3z = -14
A. Infinitely many solutions B. No solution C. (-1, -2, 2) D. (1, 1, -2)
Solve the problem.The voltage E in an electrical circuit is given by E = 5.8 cos 30?t, where t is time measured in seconds. Find the frequency of the function (that is, find the number of cycles or periods completed in one second).
A. 15
B. 
C. 30
D. 
Find the product and simplify.
? y12
A. 
B. 
C. 
D. 
Provide an appropriate response.If a company decides to make a new product, there are fixed costs and variable costs associated with this new product. Explain the differences of the two types of costs and why they occur. Use an example to illustrate your point.
What will be an ideal response?