Answer:
$3.20
Step-by-step explanation:
It's too blurry take another picture
In order to find b1 from your formula stated we need to do few calculations
A=hb1+hb2, as you wee I multiply h with both bases( b1 and b2)
I will subtract hb2 from both sides
hb1=A-hb2
now I will divide my new expression by h
b1=(A-hb2)/h
The factor of 12 is 1, 2 , 3 , 4 , 6 , 12
Hope it helps.
