Answer:
b(n) = 15 - 7(n - 1)
Step-by-step explanation:
15 is the y-intercept
-7 is the slope
12
first multiply 6 and 4.
then divide by 2.
sphere volume = 3052.1 in³
sphere volume = 4/3πr³ = 4/3(3.14)(9³) = 3052.1 in³