B because 20- 16 equals 4 I guess
Answer:
y=(x+1)^2
Step-by-step explanation:
we have the following

the values of y are squares so we can write

so as you can see when

so our relation is

since line AB and CD make all right angles (given) angles 6+7+8 will equal 90 degrees.
According to the verticle angles rule:
angle 2 is equal to angle 6
angle 3 is equal to angle 7
angle 4 is equal to angle 8.
which proves that angle 2+4+7=90 degrees
25 is the answer because of the formula adding and subsequently
15x12=180
180$ simple unless u have a different way to do it