We have that
<span>If (5x-4+13x=5) --------------> then x=1/2
Step 1
</span>let's substitute the value of x = (1/2) in the expression [5x-4+13x] and verify its result
5*(1/2)-4+13*(1/2)
(5/2)-4+(13/2)
(5-4*2+13)/2----------> (5-8+13)/2=10/2=5
then
5=5-----------> <span>the value of x = (1/2) satisfies equality</span>
Answer:
3x^2 is the final solution
See the image below for step by step explanation.
Answer: 2461.76 cubic feet
Step-by-step explanation:

Well per dozen they are making 8$ per dozen cupcakes, and 7$ per dozen brownies
The correct answer is y = 1/8x^2