book Maths Puzzle Numerical Ability

Question: the sum of four numbers is 22. the first number is twice the difference of the second and fourth numbers. the second number is 5 times the difference of the third and f

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I dont quite understand ow to solve this problem.

Solve for a H=18t+1/2at(this last t is supposed to be squared) Given the pair of inequalities I need to graph their solution set.
y>x+1
y<3/2x+3