Find the domain and the range of the relation.
A. domain: all real numbers; range: y ? - 4
B. domain: x ? - 4; range: all real numbers
C. domain: all real numbers; range: all real numbers
D. domain: all real numbers; range: y ? - 4
Answer: D
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Give an appropriate answer.If f(x, y, z) = exyz find fz(x, y, z).
A. zexyz B. xyez C. xyexyz D. xyzexyz
Solve the problem.Use a tree diagram showing all possible results when four fair coins are tossed to list the ways of getting more than two tails.
A. httt, thtt, ttht, ttth, tttt B. hhtt, htht, htth, thht, thth, tthh C. hhtt, htht, htth, httt, thht, thth, thtt, tthh, ttht, ttth, tttt D. httt, thtt, ttht, ttth
Solve the problem.Suppose that a radio signal transmission pattern can be modeled by 
for 
where the units are miles. Assume that the positive x-axis points east, and determine the distances of transmission in the east, north, west, and south directions.
A. E: 48 miles, N: 96 miles, W: 48 miles, S: 0 miles B. E: 48 miles, N: 0 miles, W: 48 miles, S: 96 miles C. E: 48 miles, N: 48 miles, W: 48 miles, S: 0 miles D. E: 96 miles, N: 48 miles, W: 0 miles, S: 48 miles
Simplify.
A. a(
- 
)
B. a(
+ 
)
C. 
D. 