Which summation formula represents the series below?
5+ 7+ 9+ 11

Ariel is working at a meat packing plant for 5 nights a week. her regular wage is $11 an hour. she earns tine and a half for any overtime hours. this week she worked 9 hours of over time .how much will ariel earn for overtime this week ?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

Sam is picking fruit from a basket that contains many different kinds of fruit. which set of events is independent?