What is the average age of children getting phones for their birthday? pls , ill be ur best friend if u ! : -)

According to thorstein veblen, a successful businessman would be most likely to demonstrate his worth to others by:

If a swimmer is traveling at a constant speed of 0.85 m/s,how long would it take to swim the length of a 50m olympic sized pool?

Abrief, "first-step" presentation of a work to be completed is called a