exam Maths Puzzle Numerical Ability

can someone Please show me how to solve inequality, giving its solution set in both intervals and graph forms, and check my answer? Thanks!

-(9 + k) - 5 + 4K > (or equal to) 4

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exam Other Question

How doe you solve these 4/a-7=-2a/a+3 I tried to solve this by using the following formulas.

75=d(miles)/t(hours) -> t= d/75

s(speed)= d/75 -> ???

100= 2d/t+t(2nd lap) -> t+t(2nd lap)=d/50

PLEASE HELP ME