In south australia, an average of 16 400 000 packets of chips were eaten each day. after a campaign by the health department this amount reduced by 3.9 million. how many packets of crisps were eaten after the campaign?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.