It would be c becuase 45/3=15
1/2 would work for the blank space
because as shown in the image you could relate it to a whole for each one and put it to 100 to figure out what the blank could be
the 0.20 can be converted to 1/5 so that way you can put everything into the 100 group
It travels 140 miles per 1 hour
The answer to your problem is a+6x+5.