A restaurant charges a tip fee depending on the number of guests in your group. If everyone gets the buffet and one group of 7 people is charged $102 and another group of 15 is charged $198.

How to write 3 tenths and 5 tenths as a decimal

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

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 ?