Question 1165630
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I'll focus on the second question only.


Let's say that j(x) is the inverse of h(x).


If h and j were inverses of each other, then these two equations must be true:
h( j(x) ) = x
j( h(x) ) = x


Let's use the first equation to say the following:
h(x) = 2x-13
h( j(x) ) = 2*j(x)-13 .... replace every x with j(x)
x = 2*j(x)-13
x+13 = 2*j(x)
j(x) = <font color=red>(x+13)/2 is the inverse of h(x)</font>
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