Let's use x as the number of questions she answered correctly. If we make an equation of out the question, it would be 8.7x+13=108.7 To solve the equation subtract 13 from both sides. So it will leave you with 8.7x=108.7-13, which is 8.7x=95.7. Divide both sides by 8.7, which will give you x=11. She answered 11 questions correctly.
This is a 2/7 divided by 2/1 then you will flip the second number and multiply to get 2/7x1/2= 2/14 then reduce to 1/7
The most you can buy Is 5! If you just keep adding 2.30 you’ll go all the way up to 11.50 with 5 boxes
2/x2 +4. So write it as 2+4/x2 your answer should be 6/x2
