Jack wants to find the height of an olive tree for a science project. Jack is 2 meters tall. He stands 6 meters away from the tree, and his shadow is 4 meters long.

  D  4/10 = 2/x

Step-by-step explanation:

2/x represents the ratio of the man's height to the tree's height. The appropriate proportion will be one that ratios the man's shadow (4 m) to the tree's shadow (6+4=10 m).

The correct proportion is ...

  4/10 = 2/x

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p