645/560=1.151785714
Ther perccent error in her estimate is 15%
Let
x----------> charge per hour to rent a jet sky in dollars
y----------> the total cost to rent a jet sky in dollars
we know that
<u>First Jet Sky Company</u>
---------> equation 
<u>Second Jet Sky Company</u>
---------> equation 
we know that
To find the number of hours for which the costs are the same
equate equation
and equation 
The intersection both graphs is the solution of the problem
using a graph tool
see the attached figure
the intersection point is 
That means
For 
the cost of the rent is
in both companies
therefore
<u>the answer is</u>

Answer
the 5 DVDs would be the better deal
Step-by-step explanation:
Answer:55.56
Step-by-step explanation: