I need help PLEASE I cant figure this question

2x + 1 < 5 solve the following inequality. then place the correct number in the box provided.

What is the value of the expression below? (81^2)^1/8

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