$$ 1)\:y^3y^7 = $$ $$ 2)\: \frac{h^6}{h^5} = $$ $$ 3)\: k^7 : k^7 = $$ $$ 4)\: (t^6)^8 = $$ $$ 5)\: a^7 \cdot f^7 = $$ $$ 6)\: (\frac{a}{s})^2 = $$ $$ 7)\:s^5s^8 = $$ $$ 8)\: \frac{t^3}{t^4} = $$ $$ 9)\: k^8 : k^2 = $$ $$ 10)\: (p^7)^2 = $$ $$ 11)\: c^9 \cdot y^9 = $$ $$ 12)\: (\frac{b}{t})^7 = $$