The equation of the tangent line can be found using slope formula and fact that slope = dy/dx.

where (x0,y0) is point A ---> (0,-1)
Then rearrange equation into slope-intercept form:

Finally sub in x=0 into dy/dx to get slope at the point (0,-1)
Answer:
10/7 or 1 3/7. I hope this helps,
Step-by-step explanation:
0.3x0.8=0.24 so 24% chance he wont have to stop i think