The answer should be d
64pi=4pir^2
cancel the pi
64=4r^2
16=r^2
r=4
Sequence 1 is arithmetic because it is being subtracted by 16.
Sequence 2 is geometric because it is being divided by 2.
Arithmetic is when you're adding or subtracted and geometric is when you multiplying or dividing.
Answer:
230-300= -70
All you have to do is subtract :)
B. {-2/3, 10/3}
|3x-4|=6
3x=10
X=10/3
-3x=2
X=-2/3