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Find the indicated oth partial sum of the arithmetic sequence. 0.3, 0.9, 1.5, 2.1, . . ., n = 20A brick patio has the approximate shape of a trapezoid (see figure below). The patio has 17 rows of bricks. The first row has a = 14 bricks and the 17th row has b = 30 bricks. How many bricks are in the patio? bricks b