Two copies of the sum of nine tenths and five tenths​

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Can someone answer this question? : )

If the value of x increases by 5, how does the value of m(x + 3) change? a) it increases by 5m. b) it increases by 8m. c) it decreases by 5m. d) it decreases by 8m.