Without graphing the function, determine its amplitude or period as requested.y = 
cos (- 
x)Find the amplitude.
A. 
B. 
C. 
D. 
Answer: C
You might also like to view...
Evaluate the exponential expression.33
A. -27 B. 6 C. 9 D. 27
Perform the indicated operation and write the answer in the form 
where a and b are real numbers.(2 - 7i)(8 - 8i)
A. 72 - 40i B. 56i2 - 72i + 16 C. -40 - 72i D. -40 + 72i
Find the whole.48% of what number of hectares is 84 hectares?
A. 57 B. 175 C. 1750 D. 0.57
Provide an appropriate response.What conditions, when present, are sufficient to conclude that a function f(x) has a limit as x approaches some value of a?
A. The limit of 
as 
from the left exists, the limit of 
as 
from the right exists, and these two limits are the same.
B. Either the limit of 
as 
from the left exists or the limit of 
as 
from the right exists
C. f(a) exists, the limit of 
as 
from the left exists, and the limit of 
as 
from the right exists.
D. The limit of 
as 
from the left exists, the limit of 
as 
from the right exists, and at least one of these limits is the same as f(a).