Victoria whit used 578 kw-hr of electricity in december. the rate is 9.1 cents per kw-hr. find the amount of her electric bill.

Ineed with number 17 i don’t get it at alll

9/10 divide by -3/15 as a mixed number

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 ?