Solve for q

f 0   =  1.5875
f 0.5 =  1.5875
f 1   =  3.175
f 2   =  6.35
f 3   =  9.525
f 4   = 12.7
f 5   = 15.875
f 6   = 19.05
f 7   = 22.225
f 8   = 25.4
f 9   = 28.575
f 10  = 31.75