The rate of visitors at a zoo increases steadily, counting from the number of days since school let out. If on the first day of summer, the zoo welcomes 156 guests and the third day they have 192 guests, how many guests will come to the zoo after school has been out for 7 more days?

Question

The rate of visitors at a zoo increases steadily, counting from the number of days since school let out.  If on the first day of summer, the zoo welcomes 156 guests and the third day they have 192 guests, how many guests will come to the zoo after school has been out for 7 more days?

Quizplus · Accepted Answer

First, we find the daily increase: ^192-156/2 = 18 more visitors each day Then we multiply by the number of days: 18 x 7 = 126 more guests than the first day of summer Then we add this to the first day of summer: 156 + 126 = 282 visitors

The Rate of Visitors at a Zoo Increases Steadily, Counting