Urgent 19 points and
the mass of the rock of gibraltar is 1.78 ⋅ 10^12 kilograms. the mass of the antarctic iceberg is 4.55 ⋅ 10^13 kilograms. approximately how many more kilograms is the mass of the antarctic iceberg than the mass of the rock of gibraltar? show your work and write your answer in scientific notation.

Step-by-step explanation:

you have to round it down:

4.55 * 1013

4.55 * 1000

and

1.78*1012

1.78*1000

then take them away

so:

4.55*1000= 4550

1.78*1000= 1780 -

               =  2770

               = 2.77*10^3

The antarctic iceberg's mass is approximately 2.77×10³ times bigger than the mass of the rock of Gibraltar. 

This isn't my original answer, someone else asked the same question, and the above is the answer that someone wrote. NOT MINE. DON'T REPORT ME.

the answer is b.)

< 1=< 2

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)