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 formula R = 0.0026? + 4.0807 can be used to predict the world recored, in minutes, for the 1500.m run t years after 1900. determin ( in terms of an inequality) those years for which the world recored will be less than 3.8 minutes.