Simplify

6g + 11 + 3g - 5

would it be 15g?

someone .

Ithink i know it but i want to be sure so can you me out ?

Aliter of water contains about 3.35 x 10^25 molecules. a certain river discharges about 2.9x 10^8 l of water every second. about how many molecules does the river discharge every minute? write your answer in scientific notation

Round each decimal to the nearest hundredth