Need Help? Read It Submit Answer 12. (-/6.66 Points] DETAILS LARPCALC10 3.4.073. Solve the equation algebraically. Round your result to three decimal places. Verify your answer using a graphing utility. (Enter your answers as a comma-separated list.) 9x2e6x + 9xe6x = 0 X Need Help? Read It Submit Answer 13. (-/6.66 Points] DETAILS LARPCALC10 3.4.084. The number N of trees of a given species per acre is approximated by the model N = 2000(10-0.12x), 3 x 30 where x is the average diameter of the trees (In inches) 4.5 feet above the ground. Use the model to approximate the average diameter (in inches) of the trees in a test plot when N = 21. (Round your answer to two decimal places.) in Need Help? Read It Watch It Submit Answer 14. [6.66/6.66 Points] DETAILS PREVIOUS ANSWERS LARPCALC10 3.4.060. Solve the logarithmic equation algebraically. Approximate the result to three decimal places. (If there is no solution, enter NO SOLUTION.) log2 x + log2(x+6) = log2(x+14) X=2 Need Help? Road It Watch it Submit Answer 15. [-/6.76 Points] DETAILS LARPCALC10 3.4.039. Solve the exponential equation algebraically. Approximate the result to three decimal places. (Enter your answers as a comma-separated list.) 3* = 4+2 x = Need Help? Read It Submit Answer