Answer:
There are 220 choices
Step-by-step explanation:
Given

(President, Treasurer and Secretary)
Required
Determine number of selection (if no restriction)
This is calculated using the following combination formula:

Where


So, we have:









<em>There are 220 choices</em>
Answer:
D)graph c
Step-by-step explanation:
it's my opinion do not take it as important
I can't see the full picture
<span> Gas station B sells gasoline at a lower rate. Its price is $3.05 per gallon.</span>