What point lies on the line described by the equation y+8=4(x-5)

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Which is the scale factor proportion for the enlargement shown?