Which answer is an equation in point-slope form for the given point and slope? Point: (5, 9); Slope: 2

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

Geometry answer picture question pls . reason and statements

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?