Why is –2x + 4y = 0 a functionYou and your family will be taking a long vacation (from 1 to 4 weeks ) to a tropical island. The island is so small that the residents don’t use cars, but large enough that they do use other forms of transportation. There are three scooter rental companies on the island. All three companies have weekly rentals. • Scooters Galore charges $50 registration and $15 per week.

• Speedy's charges $20 registration and $25 per week.

• Fun Times Rentals charges $35 registration and $20 per week.

1. Write a function to represent the cost of the each company .

2. Guide your family to find out the costs of each week for all three companies in the format of algebra (showing all calculations), table and graph.

3. Assign ‘w’ as any number greater than 5 to answer the below questions . Find out the value of f(w) for all three companies algebraically .

can anyone help me please