Question

Alana is organizing a tree-planting project at her school to celebrate Earth Day. She plans to order trees for delivery and wants to make sure her total cost, including a delivery fee and the cost of each tree, stays within her budget.
There is a linear relationship between the number of trees Alana orders, and the total cost of the delivery.
Number of trees Total cost
6 $1,000.00
10 $1,600.00
14 $2,200.00
Describe the rate of change for this relationship.
The total cost of the delivery
by
per tree.

Answer 1

The cost increases by $150 per tree.

(For example, (1600−1000)/(10−6) = 600/4 = 150, and similarly (2200−1600)/(14−10) = 150.)