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 :
Greta is faster. She is faster by 20 seconds.Her time was 5 minutes and Inez's time was 5minutes 20 seconds
She would pay $4.06 in taxes the total would be $62.06
12 egg=2.09
then your adding 6 more eggs to get 18 eggs and 6 is half of 12
so you would be adding half the price
2.09/2=1.05
so then add 2.09+1.05=3.14
So 18 eggs would be $3.14
Hope this helps!! :D
Answer:
i think 140 but im not so sure
Step-by-step explanation: