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DQ 92: Dental Services. The national cost C in billions of dollars for dental services can be modeled by the linear equation C = 2.85n + 30.
DQ 92: Dental Services. The national cost C in billions of dollars for dental services can be modeled by the linear equation C = 2.85n + 30.52. Where n is the number of years since 1990 (HealthCare Financing Administration, www.hcfa.gov).a)