Which method should be used to solve the system? Explain your answer, including a description of the first step.x2 - y2 = 363x - y = -6
What will be an ideal response?
Substitution should be used, because using elimination would mean introducing an xy term into the second equation unnecessarily. The second equation should be solved for y.
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State the domain and range of the one-to-one functions f and f-1.f(x) = 
A. f(x): domain 
? 
, range (-?, -5) ? (-5, ?);
f-1(x): domain (-?, -5) ? (-5, ?), domain 
? 
B. f(x): domain (-?, ?), range 
? 
;
f-1(x): domain 
? 
, range (-?, ?)
C. f(x): domain (-?, -5) ? (-5, ?), range (-?, 0) ? (0, ?);
f-1(x): domain (-?, 0) ? (0, ?), range (-?, -5) ? (-5, ?)
D. f(x): domain (-?, ?), range (-?, ?);
f-1(x): domain (-?, ?), range (-?, ?)
Solve the problem.Find the missing length in the following right triangle. If necessary, round to the nearest tenth. 
A. 40 mi B. 20 mi C. 6.3 mi D. 10 mi
Consider the polar equation  FIGURE 1.png)
(a) Find the eccentricity and an equation of the directrix of the conic. (b) Identify the conic. (c) Sketch the curve.
Solve the inequality, then graph the solution.-25x - 25 ? -5(4x - 3)
A. (-8, ?)
B. (-?, -8]
C. (-?, -8)
D. [-8, ?)