Given:
Serenity picked 75% of the apples of a tree in her backyard.
She picked 30 apples.
To find:
The number of apples on the tree in the beginning.
Solution:
Let x be the number of apples on the tree in the beginning.
Serenity picked 75% of the apples of a tree in her backyard.
Number of apples picked = 75% of x
= 
= 
She picked 30 apples.

Multiply both sides by 4.


Divide both sides by 3.


Therefore, the number of apples on the tree in the beginning is 40.
9 is the blank.
(a+b)^2 = a^2 + 2ab + b^2
a = x
b = 3
(x+3)^2 = x^2 + 6x + 9
Answer:
0
Step-by-step explanation:
The y-values are the same, so the line is ...
y = -9
The slope of a horizontal line is 0.