Remember
if ab=0, then assume that a and b equal 0
factor out common term
comon term in 6x^2 and 15x is 3x
3x(2x)+3x(5)=0
3x(2x+5)=0
set each to zero
3x=0
x=0
2x+5=0
2x=-5
x=-5/2
x=-5/2 and 0
the answer is y=4x-11
use y+1=4x-12
move 1 to negative because move to the other side
so the answer is y=4x-11
I don’t see a number line, but whatever says that the stock had no increase or decrease is your best bet.
Explanation: we can see it does have a decrease, but the increase the next day overrides it and turns the stock addition to $0
