Posted by Anonymous on .
Chad had a garden that was in the shape of a rectangle. Its length was twice its width. He decided to make a new garden that was 2 feet longer and 2 feet wider than his first garden. If x represents the original width of the garden, which expression represents the difference between the area of his new garden and the area of the original garden?

11th grade Algebra II 
Reiny,
original garden is (x)(2x) = 2x^2
new garden = (x+2)(2x+2) =
so difference = (x+2)(2x+2)  x(2x) 
11th grade Algebra II 
Anonymous,
wow!!! that was so fast. Thank you so much!
So the answer is 6x+4, right? 
11th grade Algebra II 
Reiny,
yes
(just happened to be on the computer) 
11th grade Algebra II 
Anonymous,
Thank you!!! :)

11th grade Algebra II 
carl,
teresa and julia are among 10 students who have applied for a trip to washington DC. Two students from the group will be selected at random for the trip. What is the probability that teresa and julia will be the 2 students selected?

11th grade Algebra II 
keana,
20%

11th grade Algebra II 
calvin,
2x5y+z=23
4x+3y5z=1
3x3y4z=9