The life span at birth of humans has a mean of 89.87 years and a standard deviation of 16.63 years. calculate the upper and lower bounds of an interval containing 95% of the sample mean life spans at birth based on samples of 105 people. give your answers to 2 decimal places.

Oscar and julie ashton are celebrating their 15th anniversary by having a reception hall. they have budgeted $4,500 for their reception. if the reception hall charges a $90 cleanup fee plus & 36 per person, find the greatest number of people that they may invite and still stay within their budget.

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Graph the line with the given slope m and y-intercept b. m=-3,b=1