150 × (.75)^x-1 for part A
the second part is:
33.3 cm's
I hope this helps!
Hello!
The equation to find the volume of a sphere you use the equation

r is radius which is half the diameter
put in 3.14 for pi and 12 for r

This gives us the answer of 7234.56 cubic units
Hope this helps!
Answer:
B.
±
Step-by-step explanation:
First, substitute the equation into the quadratic formula.

x=
Solve for x.
x= 
x=
The answer is x=
±