Answer:
150%
Step-by-step explanation:
To find percentage, divide one number by the other.
39/26 = 1.5
1.5 written as a percentage is 150%
You just multiply g(x) and f(x) together and it gives you C :)
So add them together
100+132.5=232.5 kg
kilograms=1000 grams so
232.5kg=1000 times 232.5 grams
232500 grams
Remember, the volume formula of a sphere is

.
Set that equation equal to whatever volume they give you and solve for r.

=

Now solve for r! I know you can do this. If you need help, just comment.