Answer: -3 inches
Why: Because first you need to convert mixed numbers to improper fractions. It should look like this 4 1/2 = 4*2+1/2 = 9/2
1 1/2 = 1*2+1/2 = 3/2
Then Find the unit rate of the descending
Unit rate= (9/2)/(3/2) = 3 inches
So the position of the spider relative to the surface after 1 second is -3 inches