PLEASE HELP

PLEASE HELP

Sara and Sam are each working on a science project in which they need to research the individual masses of the nine planets (including the dwarf planet Pluto as the ninth planet). Sara completes her data for the planets' masses in kilograms while Sam's data is in milligrams.
Sara:

Approximate how many times greater Saturn's mass is than Mercury's.

A: 2,000,000

B: 200,000

C: 20,000

D: 2,000

The data in the table represent the height of an object over time. which model best represents the data? height of an object time (seconds) height (feet) 05 1 50 2 70 3 48 quadratic, because the height of the object increases or decreases with a multiplicative rate of change quadratic, because the height increases and then decreases exponential, because the height of the object increases or decreases with a multiplicative rate of change exponential, because the height increases and then decreases

How do i take any fraction and make it into a decimal or percentage?

The weather forecaster says that there is a 51% chance of rain today. which statement describes the likelihood that it will rain today?