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

Nearest whole number-2
nearest tenth-1.8
nearedt hundreth-1.80
Answer:
See the picture
Step-by-step explanation:
Interval (-∞, 1] U (8, ∞)
Remember, for

the x value of the vertex is

so
given
x value of vertex is -5
and



multiply both sides by a
5=-5a
divvide both sides by -5
-1=a
a=-1

comlete the square
remember if we do

(h,k) is the vertex
I know, we can subsitute the known values of te vertex
-5 for h and 20 for k then expand





a=-1
c=-5