Question

CO Tammy is saving money to buy a bike that costs $198. She has $63 and will save an additional $9 each week. In how many weeks will she have enough money

to buy the bike?
(a) Write an equation that could be used to answer the question above.
First, choose the appropriate form. Then, fill in the blanks with the
numbers 198, 63, and 9. Let w represent the number of weeks.

Answer 1

CO Tammy can set up a linear equation 63 + 9w = 198 to calculate the number of weeks needed to save for a bike. After solving the equation, it is determined that it would take Tammy 15 weeks to have enough money to buy the bike.

Step-by-step explanation:

When figuring out how many weeks it will take for CO Tammy to have enough money to buy a bike that costs $198, we can set up a simple linear equation. Tammy already has $63, and she will save an additional $9 each week. We let w represent the number of weeks she needs to save. The equation can be written as:

63 + 9w = 198

This equation reflects the starting amount of $63 plus $9 for each week (9w), equaling the total cost of the bike, $198. To solve for w, we subtract 63 from both sides of the equation, giving us 9w = 135. Then, we divide by 9 to find w, leading to w = 15. This means it will take Tammy 15 weeks to save enough money to purchase the bike.