Answer:
C) the difference identity for the cosine function
Step-by-step explanation:
The last line showing shows the cosine of the difference of two angles. The difference identity for the cosine function would seem to be indicated.
A
Each members lunch costs $2.11
All you have to do is divide 122.38 by 58 and you get 2.11
P = - 8
Given
P = x + y ← substitute x = - 5 and y = - 3
P = - 5 + (- 3) = - 5 - 3 = - 8
$22