At Tommy's Tubes, you can rent a tube to float down the Blanco River. A payment of $12.50 allows you to keep the tube for up to 3 hours. After 3 hours, it costs an additional $3.50 per hour. Write an equation and solve it to determine the number of hours you could keep a tube for $30.00.

Question

Adison Gentry

Mathematics

26 April, 14:07

At Tommy's Tubes, you can rent a tube to float down the Blanco River. A payment of $12.50 allows you to keep the tube for up to 3 hours. After 3 hours, it costs an additional $3.50 per hour. Write an equation and solve it to determine the number of hours you could keep a tube for $30.00.

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Answers (1)

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Jillian Spence · Answer 1

Equation is:

y = 3.50 (x-3) + 12.50

Since you can keep the tube for 3 hours for a set price of 12.50 you need to subtract those 3 hours from the variable.

Now solve the following using the equation:

30 = 3.50 (x-3) + 12.50

3.50 x - 10.50 + 12.50 = 30

3.50 x = 28

x = 8 x represents number of hours. So you can keep the tube 8 hours for $30.00