Call the production cost 'C', the revenue 'R' and the number of CDs 'n':
C=2000+5n
R=10n
By definition Profit P = R-C, therefore P=10n-2000+5n = 5n-2000.
Is this for area and perimeter? If so, first make the fraction a decimal, (that would be 3.5). Then, for permeter, add 3.5 + 3.5 + 9 + 9, which is 25, for area, multiply 3.5 by 9, which is 31.5. Hope this helped!
7. 20
8. 680
9. 700
10. 4,000
11. 106,000
12. 5,800
1800
20%=1/5 which means 360x5 is the number of people at the concert
360x5=1800
hope this helps :)
Answer:
21 Students
Step-by-step explanation:
7:3
7*7=49
3*7=21
49:21
