15.90 would be your new answer
Answer:
y=25h-2000
Step-by-step explanation:
you would need to subtract the 2000 in order to know when you made a profit from buying the piano. and then the 25h is the amount of hours teaching.
-13.19 is going to be the answer
Answer:
-78
Step-by-step explanation:
substitute x as 10
so then you get
(-8) (10) + 2
then simplify
-80+2 = -78
