Answer:
use 
all you have to do is plug 4 into d and then square it, and multiply everything together.
Step-by-step explanation:
Answer:
Im not sure but i think it is 42
Step-by-step explanation:
If 21 Ib on moon=126 IB on earth
25 Ib on moon=?
25/21*126=150
Therefore the astronaut will weigh 150Ib on earth