Which answer correct estimates the product of 3.09 × 304.87

The answer is 942.05.  You get it by multiplying the two numbers together which should give you the product of 942.0483, since the 0 is not the number 5 or more ( which is the rule to round to a higher number) then you go to the hundredths place value which will be underlined for you... 942.0483 and look to the right and since 8 is higher than 5, you change the four to a five, thus giving you your answer 942.05