What is the best solution of the system of equations? y= 3x-4 -3y= -9x +12 A) no solution
B) (4,8)
C) infinitely many solutions
D) (2,-2)

C) infinitely many solutions

Step-by-step explanation:

y= 3x-4  

-3y= -9x +12

-3(3x-4 ) = -9x +12

-9x + 12 = -9x + 12

C) infinitely many solutions

x =-.20752

step-by-step explanation:

4^(x+2)=12

4^(x+2)=12

take the log base 4 on each side

log 4 (4^(x+2) = log 4(12)

we know log b(a^y) = y log b (a)

(x+2) log 4(4) = log 4 (12)

x+2 = log 4 (12)

we know   logb c = loga c/loga b

we want to convert to base 10   so a = 10

by default, we do not write the 10   c = 4   and b = 10

log4 10 = log 12/log 4

log4 10 = log 12/ log 4

x+2 = log 12/ log 4

subtract 2 from each side

x +2 -2 = log 12/ log 4 -2

x = 1.79248125 -2

x =-.20752

i dont understand

step-by-step explanation: