It is 4×3x + 4×10 = 12x + 40
you have to know the value of x in order to have a solid number
Answer:
Step-by-step explanation:
B.
First join the log4 on the left:
log4( x*(x-3) = log4(-7x+21)
Then x = -7, works: -7*(-10)=70 = -7*(-7)+21
x=-3, 18 = 42, does not work
x=3 0=0 works,
However, when one puts x = -7 in the *original* exression, log4(-7) or log4(-10) do not exist (you know why?). So x= -7 is extraneous.
Now x=3 gives log4(0) on the left and right, which does not exist.
So, C is the answer, both are extraneous. Seem to work but indeed don't work in the *original* equation
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Answer:
C
Step-by-step explanation:
The shape moves to the left by 8 and up by 7.
