Could anyone that can do 7th grade level math answer this I beg of you

According to the normal model, what percent of receivers would you expect to gain fewer yards than 2 standard deviations below the mean number of yards

James is playing his favorite game at the arcade. after playing the game 3 times, he has 8 tokens remaining. he initially had 20 tokens, and the game costs the same number of tokens each time. the number t of tokens james has is a function of g, the number of games he plays. write the function’s formula? t=

Ade and abc are similar. which best explains why the slope of the line between points a and d is the same as the slope between points a and b?