Answer: A. 65t = d
Step by step solution:
The information given is that Mr. Martinez drove an average of 65 miles per hr, since the missing value d is when 3 hours have passed.
[tex]65\frac{miles}{\text{hour}}\times3\text{ hours=195 miles}[/tex]The equation used to find the missing value, is the above operation written with variables:
[tex]\begin{gathered} 65\cdot t=d \\ t=\text{time (hours)} \\ d=\text{distance driven (miles)} \end{gathered}[/tex]