Jeff and jemaine go to an indoor ice skating ring. jeff has to rent skates at $3.50 a pair while jermaine has brought her own skates. every hour of skating costs two dollars per person. jeff can spend at most $10 while jermaine can spend most $9. if they combine their money, how many hours could they skate together? show work

Tod does not have any cookies. david gives jeff 8 cookies. then he splits half of the cookies he has left with tod. david let’s c represent the number of cookies that he starts with. he finds the number of cookies that tod has is 1/2 the difference of c and 8. write an expression to represent the number of cookies that tod has.