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.
Answer:
The solution is (3 , 1)
Step-by-step explanation:
To solve the system of the equation you can use the elimination method or substitution method.
We will use the substitution method
From the first equation x + 2y = 5⇒get x = 5 - 2y
In the second equation 3x + 5y = 14⇒we will substitute x by 5 - 2y
3(5 - 2y) + 5y =14
15 - 6y + 5y = 14
-6y + 5y = 14 - 15
-y = -1
y = 1
Substitute the value of y in x = 5 - 2y
x = 5 - 2(1) = 5 -2 =3
∴ The solution of the system of equations is (3 , 1)
801 rounded to the nearest ten would be 811
75÷500 = 0.15 multiply with a hundred to get percentage equals 15℅