well...
15 x 20 = 300
300+85 = 385
you can get 20 watches for $385
A would be the correct answer because the y variable only has a coefficient of 1. So we would solve for y, which would get us y=3x+5, then we would substitute the value in the second equation which would look like -4x+5(3x+5)=58. Hope this helpss. :)
9/100 is 9/100 in its simplest form.
You can also say that 9/100=0.09