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11 votes
11 votes
for a walk-a-thon a small circle minute to give you a flat fee of $5 plus $2 for every mile you walka.write an expression for the total amount you will collect from you sponsor at the ends of the walk-a thon

User Szamanm
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1 Answer

28 votes
28 votes

Sponsor commited to give you a flat fee of $5 plus $2for every mile you walk.

This situation represents a linear equation since it has a constant rate of change, $2 for every mile.

Linear functions are represented by:


mx+b

Let m be the miles walked


2x+5

Then, to evaluate the expression for 20 miles walk, just substitute x=20.


2(20)+5=45

For 20 miles walked the sponsor would give you $45.

User Zakhefron
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