When a number is subtracted from x the result is 6. What is that number? a.)6 - x
b.)x - 6
c.)6 + x
d.)6 - ( x - 6)

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