Show me the step by step how to solve.

Problem $1.$ An existing equal$-$tangent sag vertical curve is designed for $60$ mph$.$ The initial grade is $-3\%$ and the elevation of the PVT is $750$ ft$.$ The PVC of the curve is at station $134+00$ and the PVI is at $137+00.$ An overpass is being constructed directly above the PVI. The overpass design assumes the driver$$s eye height is $5$ ft$.$ Determine:

a$.$ the stopping sight distance

b$.$ the curve length

c$.$ the clearance height

d$.$ the mid$-$curve offset

e$.$ the elevation of the PVI

f$.$ the elevation of the bottom of the overpass structure

g$.$ Is there a linear relationship between curve length and K$-$value in this problem?

Note: No need to show calculations for case $($g$).$