Question

Refrigerator A costs $600 and $50 per year for the electricity to operate it. Refrigerator B costs $1200 and $40 per year for the electricity to operate it. Define the two variables. Write a linear equation for the cost of owning refrigerator A and refrigerator B.

Answer 1

Cost A = 600+50y
Cost B = 1200+40y

the variables are the years that pass and the cost over time

Answer 2

Refrigerator 1 is 1200 per year to own it and refrigerator 2 is is 1680 a year to own it