Answer :
The system of equations which represents the given situations are
[tex]c + a = 109[/tex]
[tex]c = 15 + a[/tex]
What is the system of equations?
A system of equations is a set of two or more equations with the same variables.
According to the given question.
Carli and Angela share a cell phone and split the bill each month.
Total amount on bill for last month = $109
Let the amount of money paid by Carli and Angela be c and a respectively.
so, the total amount paid by Carli and Angela is given by
[tex]c + a = 109[/tex]
Also, it is given that Carli pays $15 more than Angela.
⇒ [tex]c = 15 + a[/tex]
Therefore, the system of equations which represents the given situations are
[tex]c + a = 109[/tex]
[tex]c = 15 + a[/tex]
Thus, option B is correct.
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