After how many hours does he break even?

Question

asked Jan 17, 2019 80.1k views

1 Answer

Slugslog · Answer 1 · 2019-01-24T02:07:05+0000

25+30x=5x²-10
5x²-30x-35=0
x²-6x-7=0 -7=-7*1, -6=-7+1
(x-7)(x+1)=0
x-7=0, x=7 hours.
x+1=0, x=-1 (we cannot take negative for hours)
So, answer is 7

Check
y=25+30*7=235
y=5x²-10= 5*7²-10=245-10 =235

After how many hours does he break even?

Please log in or register to add a comment.

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

No related questions found

Categories

Other Questions