Answer:
14 weeks
Step-by-step explanation:
Hello kenzieshirley, this question can be easily solved by setting up and equation.
To start we can say that in total Sam will be saving $3.50 every week
$1.50 + $2.50 = $3.50
Then we can set up a linear equation:
y = 3.50x
where y = total amount saved, x = weeks
then all we have to do is substitute $49 for y, as we want to know how many weeks, x, it will take to save up for Sam's phone.
49 = 3.5x
x=14
It will take Sam 14 weeks to save up $49
Hope this helps!
-HM
