Answer:
75 posters
Step-by-step explanation:
Given
---- Revenue
--Cost of production
Required
Determine the number of posters that when cost equals revenue
To do this, we simply equate both equations
i.e. 
Collect like terms.
Multiply through by 3
Divide both sides by 8
First add your x values and your numbers on the left side
-17x + 6x= -11x
15 + -23= -8
New equation is:
-11x-8= 10-8x
Since you can't have 2 x values on different sides, you have two add the least x value to the other one. -11 is smaller
10 + 3X= -8
Subtract 10 on both sides.
3x= -18
Divide by 3
X= -6
Answer:
408 bags of dog food
Step-by-step explanation:
The question asks for the total bags of dog food. Because they give you two existing values expressing how much dog food of each type there is, all you must do is add them together. 145 + 263 = 408
