Can anybody tell me what one-third the difference between 6 and 3 in numbers pls i think it's 1/3(6-3) but my teacher says it's wrong

Which of the following graphs represents the function f(x) = 2^x

Aclass consists of 55% boys and 45% girls. it is observed that 25% of the class are boys and scored an a on the test, and 35% of the class are girls and scored an a on the test. if a student is chosen at random and is found to be a girl, the probability that the student scored an ais

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41