You should change the y by the number given
P=6-2*-5
P=16
I only know number 9
9. 9x+38
The markup is 8%, meaning it costs 8% more.
The starting price is 100%.
Therefore, the markup is 108% of $12.
If we multiply 12 by 108% (1.08), we will get our answer of $12.96
Cos theta = base /perp
= sqrt(13)/7
=0.515
28.150=26.5 is the amount you can spend on water. so 26.5/1.29= 20.54 so you can buy 20 bottles of water