Answer:
3x+12
Step-by-step explanation:
Triple is 3 times a number which we will call “x” and sonce it is the sum, it is addition :)
In a cylinder
height,h=40inches
diameter,d=16inches
radius,r=16/2
=8inches
so, by formula,
volume,v= πr^2h
=22/7*8*8*40
=8045.71 cubic inches


Let
be the unknown number.
As per the question, we have

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Therefore,
should be subtracted from the product of
and
to get
.


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<span>(1) narrower and open downward</span>