Due in half an Hour. Thanks for your help.

Answer:
C and $320.45
Step-by-step explanation:
I think it's C because this is the full function :
[tex]b = 26 \times d + 3.5 \times 13 + 14.95[/tex]
And to get the b part of the question i just put the number in
[tex]b = 26 \times 10 + 3.5 \times 13 + 14.95 = 320.45[/tex]
I'm not a 100% sure, sorry if it's wrong