Question

Renting a bicycle at a local bike shop costs $30 for the first day and $10 for each additional day.

Answer 1

Answer = $80  , Reasoning is below :


The main question in this problem is "find the cost of renting a bike for 5 days"

Step One , determine the cost rates/fees : 

It costs $30 to rent a bike, After you rent the bike it's $10 for each day you keep the bike.

Step Two , Create an equation :

C = cost  ,  D = days

We rent the bike , so that's $30c and we keep it for 5 more days, that's 10*5 because it's $10 a day.  10c * 5d = $50c.
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Let's go back to the original question :
 
"Find the cost of renting a bike for 5 days."

The cost in total for renting the bike for 5 days is $50 + $30 because of the renting fee so it's $80.

I really hope that this helps you out a lot , have a wonderful day!