Ryan is saving up for a bike that cost $198 so far he has saved $15 per week for the last 12 weeks how much more money does ryan need in order to be able to buy the bike

Given:
Cost of Bike = $198
Savings = $15
Number of weeks saved = 12 weeks

We simply deduct the amount saved from the total cost of the bike to know the amount that is still needed to be saved.

$198 - 15(12) = $183
$198 - 180 = $18

Ryan needs to save $18 more before he can buy the bike.

First you would multiply $15 BY 12 To get 180 then subtract it from 198 to get 18