Answer:

Step-by-step explanation:
-p(d+z)=-2z+59
-pd-pz=-2z+59
lets bring all z integers on one side
-2z+pz = -pd-59
z(-2+p)=-pd-59
z = (pd-59) / (-2+p)
Answer:
Step-by-step explanation:
y=mx+b where m=slope and b=y-intercept
No he would get back $4.56. Start with $20 -13.59-1.85=4.56