exam Maths Puzzle Numerical Ability

what is the equal measurement to form a 11-gon

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exam Other Question

I'm not sure how to graph this compound inequality - 3+x<-4 or 3+x>4. I get this answer:

3 + x < -4
-3 -3
__________
x < -7

3+ x > 4
-3 -3
_________
x > Please help, I don't understand what they are asking
For the exponential function ex and logarithmic function log x, graphically show the effect if x is doubled.