Answer:
Option D - 
Step-by-step explanation:
Given : Justin and Pedro each launched a toy rocket into the air. The height of Justin’s rocket is modeled by the equation
.
Pedro launched his rocket from the same position, but with an initial velocity double that of Justin’s.
To find : Which equation best models the height of Pedro’s rocket?

Solution :
Height of Justin rocket , 
Comparing with 
a=-16 , v=60 , 
Pedro launched his rocket from the same position, but with an initial velocity double that of Justin’s.
Velocity is double i.e, v=2v
Substitute in equation we get,


Height of Pedro's rockets is 
Therefore, Option D is correct.