Answer:
5x-5
Step-by-step explanation:
B because all of the other ones are correct-
For this you would do

Because 60% is the same as 0.60. And solving a problem like this is the opposite of finding a percent of a number. When you solve this you get 80. So there are 80 students in total.
Set up the equation 3x+1= 4x-7 and you’ll get your answer
The discounted price is $14.40. Hope this helped.