Answer:
[tex]150-(65+20x)[/tex]
Step-by-step explanation:
So we know that Amy sets aside a total of $150 to pay her bills.
The cost for the monthly cell phone plan is a $65 access fee plus $20 per gigabyte of data used.
In other words, the total cost when using x gigabytes is given by the expression:
[tex]65+20x[/tex]
The first term represents the access fee, and the second term represents the cost for x gigabytes.
And since we want to find out the amount of money Amy will have left after using x gigabytes, we subtract this from 150:
[tex]150-(65+20x)[/tex]
The above expression will give us the amount of money Amy will have left after paying her cell phone plan.
Our answer is the second choice.
