Question

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

Answer 1

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.