What is the standard form for the expression (5+2i)(5-9i)

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m

Ineed to know the answer to this algebra question.

Micheal is 4 times as old as brandon and is also 27 years older than brandon. how old is micheal