exam Maths Puzzle Numerical Ability

please help!!!

2z+14+18=6z+3

and

3x-2 over 3 - 5x+1 over 4 greater than equal to 0

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exam Other Question

What is ThE vOLUME OF A SPHERE WITH A RADIAS OF 40 My head is pounding. I think I am suppose to see where it crosses. going up is y, I don't know please help confused.

Match one of the following equations with a graph.

y=2x