What are the 2 variable costs involved in making a commercial drone? What makes them variable costs?

What are 2 fixed costs involved in making a commercial drone? What makes them fixed costs?

What is one mixed cost involved in making a commercial drone? Why is it considered to be a mixed cost?

Thinking about the mixed cost you identified, and the mixed cost function, where y = a + xb, explain how each component (y, a, x, b) relates to your mixed cost.

Again, thinking about your mixed cost, and the idea of a relevant range, identify some constraints within the production of a commercial drone that would help determine the # of units of production that represent both the minimum and maximum boundaries of your mixed cost's relevant range.