ANSWER
The company must produce and sell more than 700 radios to have a profit.
EXPLANATION
The revenue function is
[tex]R(x)=40x[/tex]
and the cost function is
[tex]C(x)=5,600+32x[/tex]
The company will break even when total revenue is equal to the total cost.
This implies that,
[tex]40x =5,600+32x[/tex]
We group similar terms to get,
[tex]40x - 32x = 5600[/tex]
This simplifies to,
[tex]8x = 5600[/tex]
Divide both sides by 8 to get,
[tex]x = \frac{5600}{8} [/tex]
[tex]x = 700[/tex]
The company breaks even by producing and selling 700 radios.
The company must produce and sell more than 700 radios to have a profit.