Five friends went to a baseball game. Three of the friends each bought a ticket for x dollars and a soda for $6.00. The other two friends each bought only tickets. Write and simplify an expression that represents the amount of money spent.

Answer: 3x + 3(6) + 2x
3x + 2x + 16
5x + 18 is the answer
Is this correct?

correct.

The sum of 4 times a number and -5 added to 9 times the number

Yes, your simplification process is correct. The expression 3x + 2x + 16 can be further simplified to 5x + 18. This expression represents the total amount of money spent by the five friends. The first term, 5x, represents the total cost of the three friends who bought tickets and sodas, while the second term, 18, represents the total cost of the other two friends who only bought tickets.