Answer:
$50
Step-by-step explanation:
She raised the price by 25% of $40.
A quarter of 40 dollars (or 25%) = $10. (40/4=10)
So, $10 is the price she marks up by.
$40 is the original price.
$40 + $10 = $50. Therefore, her final price is $50.
Just turn 25% into a decimal (25/100 is .25) Then multiply that by 40 to get 10. After that, add the 10 dollars to the original 40 to get $50
Hope this helps
9n + 7
