Solve the system of equations. −10y+9x=−9 10y+5x=−5 x= y=

Add the two equations together to get 14x=-14. You can get that x=-1. Plugging that in, you get y=0.

So, x=-1

y=0

b.) 160 miles on a 5 gallons car

step-by-step explanation:

240/10=24 miles/gallon

160/5=32 miles/gallon

30/1=30 miles/gallon

168/6= 28 miles/gallon

32 miles/gallon is the most amount, so this is the best.