what is total fixed cost?

How quanity is affected by price changes?

total prducts that needs to sell to cover total cost?

all of the output produced by a firm?

Relates outputs generated by one more unit of variable inputs?

amount provided at one price?

unites sold multipiled by averge price per unit?

Doesn't your textbook have a glossary? Or Google those terms/questions (which is what I would have to do to answer you)?

We don't do homework here, but if you give answers, we will give you a critique/corrections.