Final answer:
The correct expression to represent the nightly cost with additional $15 price increases, assuming a base price of $119, is 119+15x, where x is the number of price increases.
Step-by-step explanation:
The question asks us to write an expression to represent the nightly cost given a base price with additional $15 price increases. The correct expression to show this mathematically would be the base cost plus $15 for each price increase. If we were to assume that the base nightly cost is $119, then for every $15 increase, the total cost would rise by $15. Therefore, the equation would be:
119 + 15x
where x represents the number of $15 increases. So if the base nightly cost is assumed to be $119 and you are looking for an expression that includes $15 price increases, the correct choice would be option:
a) 119+15x