Someone please help me with this question

The answer would be c

Step-by-step explanation:

For questions like this that only are different by positives and negatives I have a trick. When you look at the table it makes 4 boxes. The upper right box (#1) = (+,+). The upper left box (#2) = (-,+). The lower left box (#3) = (-,-). And the lower right box (#4) = (+,-). So when looking at the answers (if they are all the same) see which ones match the quadrant positives or negatives.

the two may have that, even a breakdown is probably offered

the answer is 31.27mph