Answer:

Step-by-step explanation:
Collect like terms and calculate the sum
1/4. and. 1/12. will do that.
X2 - 8x + 15 = 0
(x - 3)(x - 5) = 0
critical points are at 3 and 5
8.5x2=17
20.6-17=3.6
3.6-1.37=1.23
1.23-0.75=0.48
0.48/4=0.12
the spokes cost $0.12 each