Answer:
joining
Step-by-step explanation:
You are given the function 
Express t:

This expression gives the month t in terms of the price p.
3.2a-16=4a
x= -20
hope that helps
That would be 13.25, 13+1/4
= 13+(1 divided by 4 which is 0.25)
= 13+0.25
Which is 13.25 so your answer is 13.25, good luck hope that helps :D