Answer:

Step-by-step explanation:
So we have the expression:

Combine like terms:

Add:

And we're done!
A scatter plot shows the relationship between two sets of data.
The correct answer is the One fired from from 60° . This is because the projectile fired from 60° has a greater vertical velocity compared to the one fired from 30° and therefore spends more time on air. Vertical velocity is the velocity of a body as it moves upwards, it is normally affected by the gravitational acceleration, however it is not affected by the horizontal velocity.