The answer is x + 5y. You have to combine like terms
ANSWER
a. d+4
b. 4d+16
EXPLANATION
The area of the square coaster is represented by:

We split the middle term to obtain,

We factor by grouping to get,


Since area of a square is l² , it means the side length of the square is

b) The perimeter of a square is given by

We substitute the length in terms of d, to obtain;

Or

Answer:
5/8
Step-by-step explanation:
1/4+3/8=5/8
10 + 1/2*4*48 => 10 + 2*48 => 10 + 96 = 106.