What is the simplest way to describe the incenter and circumcenter of triangles?

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 ?

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1

Y=21.95x+10 y=22.45x solve by substitution