Questions 4-11

Please show and explain all work on a separate sheet of paper to receive credit!! Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, etc. Solve each equation. = 5 x+4 2 . 5 =6 x + 2 = 5 . 2x - 3 5 - 2x 5. 2 - x+3 x+3 6. XE= 3 6 x+3+ x- 3 8. 4 x2 100 x2 - 9 x+2 x+2 9. x + 10 x+ 10 10. A fountain has two drainage valves. With only the first valve open, the fountain completely drains in 4 h. With only the second valve open, the fountain completely drains in 5.25 h. About how many hours will the fountain take to completely drain with both valves open? Round your answer to the nearest tenth. 11. Kayden paddled a canoe to an island. The island is 8 miles from the shore. His trip to the island took two hours while paddling against the current. He paddles 6 mph with no current. What was the speed of the current