Answer:
Step-by-step explanation:
Company A's equation is 900+0.50x5,000
Company B's equation is 1,500+0.38x5,000
Both equal 3,400 and have to be multiplied by 5,000
First we'll substitute
with 

Then we can separate this.

Then we'll solve this.



Then we'll plug in to find the extraneous solutions (if any)

Answer:
about 27 hours
actual number: 26.6666666667
Step-by-step explanation:
80 divided by 3
The answer is 15w^2 + 225w
Key:
^ - Means that it is an exponent, in case you didn't know :)