21. The table shows the fees two bike rental stores charge. For any fraction ofan hour, both stores charge for a full hour, Write and solve an inequality tofind when it is more expensive to rent a bike from City Cyeles,Two Stores that Rent BikesCostCompanyCity CyclesVillage Sports$10 plus $5.25 per hour$25 plus $2.50 per hour

Answer :

We will solve as follows:

*First: We write the expressions that describe each company [In order]:

[tex]cc=5.25h+10[/tex]

&

[tex]vs=2.50h+25[/tex]

Here h represents the number of hours.

*Second: We find the interception point:

[tex]5.25h+10=2.50h+25[/tex]

[tex]\Rightarrow5.25h-2.50h=25-10\Rightarrow2.75h=15[/tex]

[tex]\Rightarrow h=\frac{60}{11}\Rightarrow h\approx5.4545454545\ldots\Rightarrow h\approx5.5[/tex]

So, approximately after 6 hours it will be more expensive to rent on City Cicles.

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