Answer:

Step-by-step explanation:

Add 3 to both sides

Simplify

Add
to both sides

Simplify

Divide both sides by 6

Simplify

14 7/18 is the correct answer i believe.
The number is x
it is negative
the square is 28 more than 3 times itself
x²=28+3x
minus (28+3x)
x²-3x-28=0
factor
(x-7)(x+4)=0
set to zero
x-7=0
x=7
this is not the answer because we were told the number was negative
x+4=0
x=-4
correct
the number is -4
test
(-4)²=28+3(-4)
16=28-12
16=16
check
the number is -4
Answer: 
Step-by-step explanation:
The area of a rectangle:
×

×
× 

-Result:

Answer:
D
Step-by-step explanation:
It must first translate 1 unit to the left because quadrilateral F'G'H'I is one unit away from to y axis. It can then translate across the y-axis.