Answer:
C) f(n) = 5n-1
Step-by-step explanation:
The second question is 48 !!
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-6(12)= -36
(13)(-3)= -39
(-5)(16)= -80
Letter D
A = 135°
B = 30°
cosAcosB - sinAsinB = cos(A+B)
cos(135°+30°)
cos(165°)
Z-Score= x-value minus mean (average) / standard deviation so z score equals -2.16 or 1.54% below the mean based on table a