Can anyone help please I’m in desperate need of someone help please and God bless

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?