Seutas tali yang panjangnya 121 meter dipotong menjadi beberapa bagian sehingga dibuat deret geometri. Jika jumlah potongan terpendek 4 meter dan jumlah potongan terpanjang 108 meter, maka jumlah potongan tali yang terbentuk adalah …… .. 14

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So don't take my word i'm not exactly a mathematical person but i would assume a. because while selling the soap every month you increase in sells so you would by 11 percent. the you would get the factor 0.89 which if i had to guess would be the monthly profit over 11 probably wrong tho

I  dont  know much about vertexes but i know to solve this function you need to use foil method and then corresponmd the vertex with the actual coordinates, hope i !