Assuming this is the equation you want to operate on:



Before final operation we have to assume that x is not equal to 0. :)
Answer:
this means that n = -3 ,-2, -1, 0 1 2 3 4 5 6 7 8 9 e.t.c.
Step-by-step explanation:
Answer:
this is the chan of formula from 7=LW to
w =7/L
because we divided both sides by L.
Answer: Mark up percent = 20%
Step-by-step explanation:
Given: Cost price of each T-shirt = $5.00
Amount required = $450
Total students = 75
Market price for each T-shirt to raise the required amount = (Amount required ) ÷ 75
= $450 ÷ 75
= $ 6
Mark up percent = 

Hence, Mark up percent = 20%