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 :
Answer:
Salt: 1, 2, 4
Pepper: 1/2, 1, 2
Garlic Powder: 1/4, 1/2, 1
Onion Powder: 1/4, 1/2, 1
Step-by-step explanation:
The batches are doubling each time.
Answer:
The width will be 
Step-by-step explanation:
Thinking process:
Let the model be:

factoring out 4 gives:

Factorizing the expression in the parentheses gives:

Therefore, since the expression in the parentheses cannot be factorized further, the expression is:

Answer:
Step-by-step explanation:
2+2=4