Answer:
t = 1.025c + 5.99
Step-by-step explanation:
The shipping charge, = $5.99
Tax paid on purchases = 2.5%
Cost of item, c
Total cost, t, including shipping and tax
Total cost = Cost of item + tax on purchase +. Shipping fee
Tax on purchase : 2.5% * cost of item
Tax on purchase : 0.025c
Shipping = $5.99
General formula for a linear equation :
y = mx + c
Hence, for the cost model:
Total cost = Cost of item + tax on purchase +. Shipping fee
t = c + 0.025c + 5.99
t = 1.025c + 5.99
