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Model math utk penjualan perminggu ===> s(t) = -2 l t - 22 l + 44total penjualan album selama 44 minggu, adalah:
s(44) = -2 l 44 - 22 l + 44
= -2 l 22 l + 44
= -44 + 44
= 0
Jadi total penjualan album selama 44 minggu pertama = 0 (belum ada penjualan sama sekali)
semoga jelas dan membantu ya
Penjelasan bagian b
Substitusikan t = 44
s(44) = -2|44-22| + 44
= -2|22| + 44
= -44 + 44 = 0