For a monthly time series, the seasonal factors for an additive decomposition model are -34.40932 -35.77795 -20.60610 22.62844 32.21332 34.26816 31.42092 32.80905 34.66891 27.27059 -21.30169 -30.09887 Read across so that the Jan. factor = -34.40932, the Feb. factor = -35.77795, and so on. Suppose that an observed value in the month of August is 42. What is the seasonally adjusted value for this month? Please provide 2 decimal places