Respuesta :
Answer: Option 'C' is correct.
Step-by-step explanation:
Since wee have given that
Let the grade of Valerie's test be x
First it multiply by 2
[tex]2\times x=2x[/tex]
Then, it is subtracted by 15.
[tex]2x-15[/tex]
Therefore, Allie's test grade can be written as
[tex]2x-15[/tex]
Hence, Option 'C' is correct i.e. 2x-15