Wee need a photo of the number line to help u sorry
128 at 4 weeks
6 lb 3 oz born
There are 16 ounces in a pound
Multiply 16 by 6 you get 96
Add the three you get 99
He was 99 oz day of his birth
Now subtract the two
128-99
29
He gained 29 ounces
It's B because 1 Litre is 1000 millimeteres
When the calcium atom loses electrons, it's charge increases by the number of electrons lost.
It loses 2 electrons, so it's charge increases by 2.
The answer is +2
