Answer:
no it is not a proportional relationship
If you subtract negative from negative the answer will be positive if u subtract a nevagative from a positive it will become a negative.
Answer:
yes I agree with kevin's thinking because she needs 75 for each of the 12 days so its 12*75 and compare with how she earns 85 dollars each month for ten months which is 85 *10
Step-by-step explanation:
ANSWER
The company must produce and sell more than 700 radios to have a profit.
EXPLANATION
The revenue function is

and the cost function is

The company will break even when total revenue is equal to the total cost.
This implies that,

We group similar terms to get,

This simplifies to,

Divide both sides by 8 to get,


The company breaks even by producing and selling 700 radios.
The company must produce and sell more than 700 radios to have a profit.