D
its just a basic logarithmic law.
Weight is another term for the force from mass multiplied by acceleration due to gravity, the equation being expressed as

, being force, mass, and acceleration respectively.
We already have 2 parts of the equation,
Acceleration due to gravity on the planet is

Plug it into the equation


x

Weight or force from gravity is 60N.
Answer: 33
Step-by-step explanation: Hope this helps! :)
For On call = 10/3.5 = $2.85 for per hour
For talk time 1.25/1/2= $2.5 for per hour