If you know any please help! I would really appreciate it!

How can we find the measure of an exterior angle if we know the measurement of an interior angle

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?