Final answer:
By multiplying the cost of an individual ticket to each destination by four and finding the difference, the Harrison family can save $816 on airfare by choosing to vacation in Vancouver instead of Fairbanks, Alaska.
Step-by-step explanation:
The question asks us to calculate the amount of money saved by the Harrison family if they choose to vacation in Vancouver instead of Fairbanks, Alaska. To solve this, we multiply the cost of an individual airplane ticket to each destination by four, since there are four members in the Harrison family, and then find the difference between the two totals.
The total cost for Fairbanks tickets is $955 × 4 = $3,820. The total cost for Vancouver tickets is $751 × 4 = $3,004.
Now subtract the total cost for Vancouver from the total cost for Fairbanks to find the savings: $3,820 - $3,004 = $816.
Therefore, the Harrison family can save $816 on airfare by vacationing in Vancouver.