A Star (No Matter What Its Mass) Spends Most of Its

question 164

Multiple Choice

A star (no matter what its mass) spends most of its life

• A) as a protostar.
• B) as a red giant or supergiant.
• C) as a planetary nebula.
• D) as a main- sequence star.
• E) as a T- Tauri variable star.

---

Definitions:

Variable Costs

Costs that change in proportion to the level of production or sales volume.

Fixed Costs

Costs that do not vary with the level of output or activity, remaining constant over a period.

Break-Even Point

The sales volume at which net income is zero; the intersection of the total cost and total revenue lines on a break-even chart.

Break-Even Point

The point at which costs or expenses and revenue are equal, resulting in no net loss or gain from a business or investment.