THE HEIGHT AM OF M ERAMY IN A THEOMOMETER VARIES DIRECTLY WITH THE TEMPERATURE T'C OF D MERAMY.WHEN T=45,H=6.75,FIND THE RELATIONSHIP BETWEEN H$T HENCE FI ND WHEN T=76

Answer 1

From this gibberish, I think I got that
Height varies directly with temperature, so
h = kt, where k is a constant
when t = 45, h = 6.75
6.75 = 45k
k = 6.75/45 = ...

now you have the completed equation, sub in t = 76

or

just use a simple ratio:
h/76 = 6.75/45
h = 76(6.75)/45 = ....