Answer:
$16
Step-by-step explanation:
b= -8
we have: 3y +12 = 6x <=> y + 4 = 2x <=> y= 2x - 4
=> 2y=4x + b
<=> 2(2x-4) = 4x +b
<=> 4x - 8= 4x +b
<=> b = -8
interestinggggggggggggg
C = 2 * pi(3.14) * 4.6
C ~ 28.903