Hello!
I would say the correct answer is C. BF
The definition of a radius is "<span>a straight line from the center to the circumference of a circle or sphere."
I hope this helps :)</span>
Step-by-step explanation:
first one
when x=0, y=4
wheb x=4, y=0
Answer is 82
substitute z for 9
9^2 = 81+ 1= 82
I cannot help you unless I know what ones you need help on
