May somebody me with these problems; which i’ll be forever grateful for. i’ll give brainiest answer to the person who can do both! : )

a)Louisa : c - 0,15*c

New expression : 100% * c - 15% * c = 85% * c

Comparison : c - 0,15*c and 85%*c : the expressions are basically the same, except Louisa's expression is in decimal numbers, and the new expression is in percentage.

Louisa's expression is represented like substraction with decimal numbers, and the new expression is in percentage and it means the total amount directly.

b) width = w = 16 feet

lenght = l = 16 feet + 4%*16 = 16 + 0,04 * 16 = 16 * (1+0,04) = 16 * 1,04 = 16,64 feet

the area of the new room = w * l = 16 * 16,64 = 266,24 square feet

its the fourth option

180

step-by-step explanation: