Question 195154
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Working Eqn,
H(x) = 2.75x + 71.48



Subst. x= 39cm:


H(x)= 2.75(39) + 71.48 = 107.25 + 71.48
<font color=blue>H = 178.73cm</font>, (Answer)



You want to verify, we'll see the graph.


{{{drawing(500,500,-15,50,-15,200,graph(500,500,-15,50,-15,200,2.75x+71.8),green(line(0,178.73,39,178.73)),green(line(39,178.73,39,0)),blue(locate(-11,182,HEIGHT)),red(locate(37,10,39cm)),arrow(11,98,14,86),green(locate(14,84,H(x)=2.75(x)+71.48)),blue(locate(20,-10,Humerous=x)),red(locate(4,184,178.73cm)))}}}


Thank you,
Jojo</font>