5 middle school questions? 10 points!?

1. Simplify (3^6)^18 a) 3^3 b) 3^12 c) 3^24 d) 3^108 2. Simplify 3^-9/3^-12 a) 1/3^3 b) 1/ 3^21 c) 3^3 d) 3^21 3. Which set of ordered pairs does NOT represent a function? a) {(20, 10), (10, 20), (-20, -10), (-10, -20)} b) {(14, 12), (10, 8), (6, 4), (2, 0)} c) {(-7, -5), (-6, -3), (-5, -1), (-4, 1)} d) {(0, -1), (5, -2) (10, -3), (5, 1)}. 4. Which grouping of numbers gives the expression a value of 14? a) (5 + 3) * 18 divided by 9 - 3 b) 5 + (3 * 18) divided by 9 - 3 c) 5 + 3 * (18 divided by 9) - 3 d) 5 + 3 * 18 divided by (9 - 3) 5. What is the slope of a line with the points (-3.1, -1.9) and (-3.1, -8.6)? a) zero b) positive c) undefined d) negative THANK YOUU!!! SOO MUCH 10 POINTS its hard