Final answer:
Megan needs to save at least $11.25 each week for the next four weeks to have enough to buy the cell phone that costs $220, considering she has already saved $175.
Step-by-step explanation:
The question asks to calculate how much money Megan needs to save each week to buy a new cell phone that costs $220, given that she has already saved $175 and wants to buy the phone in four weeks. To solve this, we'll write an inequality and then solve for the weekly savings required.
We'll let x represent the amount Megan needs to save each week. The total amount she needs to save is the cost of the phone minus what she has already saved:
$220 - $175 = $45
Megan has four weeks to save this amount, so we can write the inequality:
4x ≥ $45
To find the minimum amount Megan needs to save each week, we divide both sides of the inequality by 4:
x ≥ $45 / 4
x ≥ $11.25
Therefore, Megan needs to save at least $11.25 each week to reach her goal of buying the new cell phone in four weeks.