What is the solution set of the equation x2+3x-4=6

The ages of personnel in the accounting department of a large company are normally distributed with a standard deviation of 7 years. there is a 0.02275 probability that the age of any randomly chosen person in the department is less than 22 and 0.15866 probabilty that the age of any randomly chosen person is greater than 43. what is the mean of this distribution?

Write a function rule for  “the output is  5 less than the input.” let  x be the input and let  y  be the output.

Two less than the quotient of a number and four is less than six. i need the inequality. a. x< 32 b. x< -32 c. x> 16 d. x> -16