"y varies directly as x" means y = kx
you do not know what k is yet, other than that it is some constant number.
Now plug in the given values, y=12 when x=4, in the equation
12 = 4k
=> k = 3
Now rewrite the equation with the k value you just found
y = 3k
Substitute 18 in place of x
y = 3(18)
y = 54
Answer:
(x+6)(x-1)
Step-by-step explanation:
x^2+6x-x-6
x(x+6)-(x+6)
(x+6)(x-1)
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If you are rounding to the nearest tenth then yes
Answer:
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