Ma trận nghich đoa rlaf gì

What is the number 321,000,000 in scientific notation? also what is the number? ?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters

If f(x)=1/x and g(x)=x+4 which of the following is the graph