For 4r - 9>7 it is <span>r>4
</span>
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.
15% as decimal is 0.15 so 90g*0.15= 13.5
so the equation is 90g*15%=13.5
