2x-4y=8
y=1/2x+6

your supposed to substitute but i dont know how

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?

Me d is also an option but i couldn't get it in the picture