Math work help??????????

Question

Right or Wrong

70% of 3000 is what number =2100

60 is what percent of 180 =300%

65% of the 940 students at Tyler Academy have attended at least one other school. How many students have attended more than one school =611

Jonathan scored an 80% on a 160-point exam. How many points did he receive credit for =128

Sales tax in the state of florida is 70%. Tiffany purchased a coat that was marked at $35. How much was her total bill including tax =$2.40

A CD that regular sold for $17.99 is marked 10% off. How much is the sale price of the CD =1.79

What is the percent of increase from 20 to 39 =95

What is the percent of decrease from 112 to 42 =62.5

Jessica borrowed $9,000 from the bank to purchased a used car. The bank has given her an interest rate of 7.5% annually for a period of 2.5 years. What is the total amount she will have to pay back at the end of the loan? =$1,687.50

Answer 1

1.  is right

2.  is wrong

3.  is right

4.  is right

5.  is wrong

6.  is wrong

7.  is right

8.  is wrong

9.  is right

Answer 2

1. Correct

2. Wrong - 60=x(180)  x=60/180=33.3%

3. Correct

4. Correct

5. Wrong - Tax = 70% - 35.00*.7 = 24.50

Total cost = tax +sales cost = 24.50+35.00 = 59.50

6. Wrong - 17.99*.1 = 1.80 = discount amount

Total Cost = original cost - discount = 17.99-1.80 = 16.19

Hope this helps....b.