Question

The trinket store is open for 14 hours per day. They sell an average of 5 trinkets per hour. The back storeroom currently has 560 trinkets in it

Answer 1

Q1)
write the equation that estimates the number of trinkets T that will be in the storeroom after H hours
Initially the number of trinkets available = 560
every hour they sell an average of 5 trinkets 
therefore in H hours, number of trinkets that will be sold = 5 trinkets/hr * H hrs
number of trinkets sold in H hours = 5H
the remaining number of trinkets = T
T = number of trinkets initially available - number of trinkets sold 

T = 560 -5H

Q2) 
How many days will it take to run out of trinkets 
number of trinkets sold per hour - 5 
number of hours the shop is open for - 14 hours / day
during one day number of trinkets sold - 5 trinkets/hr x 14 hrs/ day
                                                              = 70 trinkets per day
there are 560 trinkets available 
and if 70 trinkets are sold per day 
number of days it takes to sell 560 trinkets 
days = 560 trinkets / 70 trinkets/day 
         = 8 days 

the third response is correct - 1) T = 560 -5H
                                                2) 8 days