Jen needs more than $120 to go camping. She has already saved $30. Which number line BEST represents the possible amounts of money Jen would need to save to go camping?

Please help I’m taking a test :(
This is worth 40 points

Create a question with this scenario you could ask that could be answered only by graphing or using logarithm. david estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x.