Since the creation of a social​ program, the percent of persons 65 years and over with a family income below the poverty level has declined. The percent can be approximated by the function ​P(t)  =30.19−5.92lnt where t is the number of years since 1965. Find the percent of persons 65 years and over with family income below the poverty level and the rate of change in 1970.

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