To raise funds, a school is sponsoring a magazine subscription drive. By visiting 90 homes in the neighborhood, a student sold subscriptions worth $375. To reach a $1200 goal, how many additional homes must the student visit?

To calculate the number of additional homes the student needs to visit to reach the $1200 goal, we need to find out the average amount of money the student makes per home visit from the given information.

Step 1: Calculate the average amount of money made per home visit. We do this by dividing the total amount of money collected by the number of homes visited. So: $375 ÷ 90 homes = $4.166... per home (rounded to 3 decimal places).

Step 2: Determine the additional amount needed to reach the goal. The student has already collected $375, but the goal is $1200. So, the student still needs to collect: $1200 - $375 = $825.

Step 3: Calculate the number of additional homes the student must visit. We divide the additional amount needed by the average amount of money made per home: $825 ÷ $4.166... per home ≈ 198 extra homes (rounded to the nearest whole number).

So, the student must visit approximately 198 additional homes to reach the $1200 goal.