exam Maths Puzzle Numerical Ability

Help please, I just can not figure out what do do here. I have 2 I need help with and grealy apprieciate all help. It says to graph the inequality on a plane. Thank you.
4x-3 is <

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exam Other Question

Find the height and base of the parallelogram that has an area of 100 square units.
Height=x
base=x+15
solve for x

x+3
____ = t^2
t