Women's records in the women's 1500-m run. The formula R =0.0026?

Women’s records in the women’s 1500-m run. The formulaR =−0.0026? + 4.0807can be used to predict the world record, in minutes, for the 1500-m run t years after 1900. Determine (in terms of an inequality) those years for which the world record will be less than 3.8 min.