In any city in 2014 80 kg, Chinese cabbage cost was decreased by 2a% in early 2012, in early 2013 cost was increased by a%. In early 2013 80kg of Chinese cabbage was early 2012 80 kg. How many times did cost of 2012 80 kg Chinese cabbage and 2013 80 kg Chinese cabbage? choices:
1. 2 times
2.1/2 times
3.10-a/10+2a times
4.100-2a/100+a times
5. 100+2a/10-2a times

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In factoring by grouping, what would you have for step 3 for the following? step 1: x^3 +5x^2 +4x+20 step 2: x^2 (x+5)+4(x+5) step 3: ?

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Tcan be concluded that % of the seniors would prefer to see more candid pictures in this year's edition of the yearbook.