exam Maths Puzzle Numerical Ability

y=3xsquared
Find the rate of change between x=-2 and x=-1

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exam Other Question

(rad)1/6 im not sure if I can go any farther simplifying this, can i? please help me with this problem:
angle w is equal to angle z where the measure of angle w is (11x-8) and the measure of angle z is (9x+4) and they are both acute angles
this problem is from chapter 6, lesson 2.6 and lesson 2.7 for geometry