⦁ What is the vertex form of the parabola from Daredevil Danny’s practice jump?

Which addition property is being illustrated below? (type commutative or associative) (6 + 7) + 1 = 6 + (7 + 1)

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

The tile along the edge of a triangular community pool needs to be replaced? ?