Do the operation and express the answer in a + bi form.
A) 19 i
B) - 19 i
C) - 190 i
D) - 19
E) 19
D) - 19
Mathematics
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Find the largest open interval where the function is changing as requested.Increasing y = (x2 - 9)2
A. (-?, 0) B. (-3, 0) C. (-3, 3) D. (3, ?)
Mathematics
Find the point-slope form of the equation that is described.Passes through the points 
and 
A. y - 
= 
or y - 
= 
B. y - 
= 
or y + 
= 
C. y - 
= 
or y - 
= 
D. y - 
= 
or y - 
= 
Mathematics
Prove the identity.
?
What will be an ideal response?
Mathematics
Answer the question.At a restaurant, there are 11 different beverages, 5 of which are caffeinated. Write a fraction that describes the number of beverages that are 
caffeinated.
A. 
B. 
C. 
D. 
Mathematics