Answer:1800
Step-by-step explanation:
Answer:
$1800
take 180 times 4 ( for the four weeks she worked) = 720
then take 120 times 9 ( for all the cars he sold) = 1080
=1800
mean
or
-4(3m-1)+9m=m
-12+4+9m=m
-8=8m
-1=m