Katie wants to buy a motor scooter that costs $518. She has already
saved $188 and will earn $22 each week from babysitting jobs. Write and
solve an equation to see how many weeks it will take Katie to save
enough money to buy the motor scooter.

First, you can recognize that Katie is going to make $22 each week, making that our slope. She has already saved $188, so that is our y-intercept since it is our 'start amount.' And then we are given one more number, $518, which is our y value since it is our 'goal.'

Step 2: Create an equation

[tex]518=188+22x[/tex]

Step 3: Solve for x

[tex]518=188+22x\\330=22x\\x=15[/tex]

Katie wants to buy a motor scooter that costs $518. She has already saved $188 and will earn $22 each week from babysitting jobs. Write and solve an equation to see how many weeks it will take Katie to save enough money to buy the motor scooter.

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Katie wants to buy a motor scooter that costs $518. She has already
saved $188 and will earn $22 each week from babysitting jobs. Write and
solve an equation to see how many weeks it will take Katie to save
enough money to buy the motor scooter.