ANSWER

EXPLANATION
The first equation is

The second equation is

We equate both equations to get,


Simplify

Factor

Either

Or


Put x=0 or x=1 into the second equation to get,

Or

Therefore the solutions are;

Yes they are correct.
At least I'm pretty sure they are:)
The initial cost is 189.69. It is marked up 30%.
By simple calculations,
Final cost of the tablet computer = Initial price + 30% of marked price
= 189.69 + (30/100 x 189.69)
This gives us the net value of 245.7. Hence the price of the computer after it's been marked up will be 245.7