I think I did my math wrong but I got c
If your graph is a COS or SIN graph :

a is the Amplitude
and period is:

If your graph is a TAN graph :

A TAN graph has no amplitude as it has no Maximum or Minimum value.
To find period :
Salary after 12 years = $28,000(1+0.026)^12 =$38100.12
Answer:
-2
Step-by-step explanation:
(7/2)-(4.5* 3) +8= -2
Answer:
49 minutes
Step-by-step explanation:
9:50 to 10:00 is 10 minutes
plus the 39 minutes in 10:39
10 + 39 = 49
hope i helped