Y = 2x-6

I don’t know how to use this WEBSITE :( but uh someone help me again :/

What is the product? (x2+3y+7) [yy+1)

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

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters