Are manager and leader are born or made ? why ? help guys​

Anewspaper boy is trying to perfect his business in order to maximize the money he can save for a new car. daily paper sales are normally distributed, with a mean of 100 and standard deviation of 10. he sells papers for $0.50 and pays $0.30 for them. unsold papers are trashed with no salvage value. how many papers should he order each day and what % of the time will he experience a stockout? are there any drawbacks to the order size proposed and how could the boy address such issues?

Starting at age 30, you deposit $2000 a year into an ira account for retirement. treat the yearly deposits into the account as a continuous income stream. if money in the account earns 7%, compounded continuously, how much will be in the account 35 years later, when you retire at age 65? how much of the final amount is interest?

Corrective action must be taken for a project when (a) actual progress to the planned progress shows the progress is ahead of schedule. (b) the technical specifications have been met. (c) the actual cost of the activities is less than the funds received for the work completed. (d) the actual progress is less than the planned progress.