Question

Jeremiah is saving money from a tutoring job. After the first three weeks he saved $135. Assume the situation is proportional. Use the unit rate to write an equation relating the amount saved s to the number of weeks w worked. At this rate how much will Jeremiah save after eight weeks?

Answer 1

After the first 3 weeks Jeremiah saved $135. If the situation is proportional:
$135 : 3 = $ 45. It means that he can save $45 for one week.
Therefore an equation is:
s = 45 * w,
where s is the amount saved and w is the number of weeks.
After 8 weeks :
s = 45 * 8 = $360.