Slope of tangent line = dy/dx = 2x+3
k is y_intercept of tangent line
2x+3 = -1
x = -2
y = (-2)^2+3(-2)+1 = -1
tangent line passes through point (-2,-1)
k = x+y
k = -2 -1
k = -3
Sorry I don’t know the answer I am just answering to see something about my points because they are negative and I am trying something I am so sorry here is also a cute picture of Louis Tomlinson for you:)
Let:
100%---------------->24h
30%------------------>xh
Using cross multiplication: