Encuentre el resultado de las operaciones indicadas 3(4+5-7+1) -2 (-3+8+5-4)+5(1+9-8)=​

Pls me this is due today and i need i will make brainliest if you me answer correctly and i will report if you try to give me a dumb answer.

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

Write an inequality for this description. - one fourth of the opposite of the difference of five and a number is less than twenty.