Aye friend. i need some with this question. what is the slope of this graph? -1/4 4 1/4 -4 image attached

The slope is -4 bc the line is going in a negative direction

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425