Solve by the substitution method. show your work for full credit.
y = 3x – 12
2x – 3y = -13

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 ?

Combine like terms to make a simpler expression 3z+z

5x−4≥12 or 12x+5≤−4 can you with this problem