Dental services. The national cost C in billions of dollars for dental services can be modeled by the linear equation C _ 2.85n _ 30.

92. Dental services. The national cost C in billions of dollarsfor dental services can be modeled by the linear equationC _ 2.85n _ 30.52,where n is the number of years since 1990 (Health CareFinancing Administration, www.hcfa.gov).a) Find and interpret the C-intercept for the line.b) Find and interpret the n-intercept for the line.c) Graph the line for n ranging from 0 through 20.