I need help with this Question. Solve the system by substitution y=3 and 2x-y=11

Sunday: 1 1 2 monday: 1 tuesday: 2 1 2 wednesday: 1 3 4 thursday: 2 friday: 1 1 2 saturday: 2 jenna is a swimmer and trains every day. the schedule shown outlines the number of hours she trains each day. what is the total number of hours that jenna trains during the week?

What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?

Pls never taught i’m really confused and i rlly need