Solve.1 = 
- 
A. 3, -2
B. -3, 2
C. - 
, 
D. 3, 2
Answer: B
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Solve the equation for the indicated variable.2 - (n - 0.2x) = 3n for x
A. 
B. 10 - 20 n
C. 10 n - 2
D. 20 n - 10
Solve the problem.A formula used by an engineer to determine the safe radius of a curve, R, when designing a road is: 
where ? is the superelevation of the road and V is the velocity (in feet per second) for which the curve is designed. If 
ft per sec, f = 0.1
and 
find R. Round to the nearest foot.
A. R = 1970 ft B. R = 1977 ft C. R = 1973 ft D. R = 1983 ft
Change the given polar coordinates (r, ?) to Cartesian coordinates (x, y).
A. (-2
, -2)
B. (-2, 2
)
C. (-2
, 2)
D. (2, 2
)
Give the domain and range of the relation.
A. domain: (-?, ?); range: (-?, ?) B. domain: (-?, 0) ? (0, ?); range: (-?, -3) ? (-3, ?) C. domain: (-?, 0] ? [0, ?); range: (-?, -3] ? [-3, ?) D. domain: (-?, -3) ? (-3, ?); range: (-?, 0) ? (0, ?)