Answer:
[tex]\textsf {C. 3x + x = 48}[/tex]
Step-by-step explanation:
[tex]\textsf {Let :}[/tex]
[tex]\textsf {Distance travelled by Trisha = x}[/tex]
[tex]\textsf {Distance travelled by Brandy = 3x}[/tex]
[tex]\textsf {It mentions the sum is 48. So both distances need to be added.}[/tex]
[tex]\implies \mathsf {3x + x = 48}[/tex]
Option C gives the right answer.
Let Trisha drove x mi
Brandy drove 3×x=3x mi
Together they drove=48
Now
The equation is
The option C can be used