Answer: 
Step-by-step explanation:
The area of a square is 
Substituting d for x, you get 1/2x^2
Hope this helps <3
Well it would be 70% of them because Jack had 100% and 30% minus 100% is 70%
1.905 rounded to the nearest tenth is 1.9
Looks like all you have to do it multiply the numbers together; there is no application of the Distributive Property to these problems.