It I see g and b the anwser
The answer would be a line. This is because if you distribute the 2 into the equation like this:
t=2(s+2)
t=2s+4
You can see that this is essentially the linear equation of y=2x+2. A linear equation results in a line.
I believe it is -2. When x is 0, y is 1 (0,1). When x is 2, y is -3 (2,-3). The slope of the lime that these two points create is -2
The answer to that question is estimate