Find the domain of the variable in the equation. Write the answer in interval notation.
= 
A. (-2, 4) ? (4, ?)
B. (-?, 2) ? (2, 4) ? (4, ?)
C. (-?, -2) ? (-2, 4) ? (4, ?)
D. (-?, -2) ? (4, ?)
Answer: C
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Graph the function, showing all asymptotes (those that do not correspond to an axis) as dashed lines. List the x- and y-intercepts.f(x) = 
A. No x-intercepts, y-intercept: 
;
B. No x-intercepts, y-intercept: 
;
C. No x-intercepts, y-intercept: 
;
D. No x-intercepts, y-intercept: 
;
Solve the given differential equation. (The form of yp is given.)D2y + 49y = sin x - 1 (Let yp = A + B sin x + C cos x.)
A. y = c1 sin 7x + c2 cos 7x + 
+ 
sin x
B. y = c1 sin 7x + c2 cos 7x - 
+ 
sin x
C. y = c1 sin 7x + c2 cos 7x - 
- 
sin x
D. y = c1 sin 7x + c2 cos 7x - 
+ 
sin x + 
cos x
Convert the units.86,000 g = 
kg
A. 86,000,000 kg B. 86 kg C. 0.86 kg D. 860 kg
Solve.Dominique buys $13.50 worth of gasoline for her car. If the gas station charges $1.399 per gallon, how many gallons did she get? (Round to the nearest tenth.)
A. 10.4 gal B. 1.0 gal C. 9.6 gal D. 96.5 gal