I need some help

Question

Jennifer is saving money to buy a bike. The bike costs $212. She has $117 saved, and each week she adds $19 to her savings. How long will it take her to save enough money to buy the bike?

Answer 1

Riley, here’s a strategy: make an equation, solve the equation

First identify the quantities involved:

Let w be the number of weeks it will take to be able to buy the bike

Let s be her savings

Now write an equation involving these quantities:

Her savings are 117 right now, plus 19 dollars for every week.

s= 117 + 19w

you kmow the savings that are needed, so put that number in for s

212 = 117 + 19w

 

now can you solve this for w?