A, B and D are true
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2.1 2.19 2.2 2.3 2.54 2.6
I hope this helps you
5 <k-2
5+2 <k
7 <k
k-2 <11
k <11+2
k <13
7 <k <13
(1 + x) (13) = 13+6.5
13x + 13 = 19.5
13x = 6.5
x = 0.5
The item was marked up by 50%
It dosnt necessarily represent the function