Determine the amplitude or period as requested.Period of y = -4 cos 
x
A. 
B. -4
C. 6?
D. 
Answer: C
Mathematics
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Write the given decimal as an infinite series, then find the sum of the series, and finally, use the result to write the decimal as a ratio of two integers.0.44444 . . .
A. 
B. 
C. 
D. 
Mathematics
Round to the nearest dollar.$382.26
A. $382 B. $381 C. $383 D. $382.36
Mathematics
Provide an appropriate response.Graph the solution to 3x + 1 ? 13 or x - 2 ? 5.
A. 
B. 
C. 
D. 
Mathematics
z = f (x, y) = y ?x; a = 25, b = 5, x = 7.28, y = 8.51
For the following functions, use linearization and the values of z, 
at (a b) to estimate z (x, y) .
Mathematics