13. describe the number of solutions for the equation. 5(x – 9) = 5x (1 point) no solution one solution infinite solutions 14. describe the number of solutions for the equation. –2(x – 1) = 2x – 2 (1 point) infinite solutions one solution no solution 15. solve the equation. 3x + 6 = 9 (1 point) 15 9 5 1 16. solve the equation. r over 4 – 1 = 4 (1 point) 1.3 0.8 12 20 17. solve the inequality. 9x < 72 (1 point) x < 8 x < –8 x < 63 x < 81