Please help if you can and hurry

Which of the following would represent the sum of 3 consecutive integers if x is the first integer?

Which of the following are parts of a sphere

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