What component on a smartphone requires pairing with another device?

What is the algorithm for building a binary tree program

1. declare a constant named cents_per_pound and initialize with 25. 2. get the shipping weight from user input storing the weight into shipweightpounds. 3. using flat_fee_cents and cents_per_pound constants, assign shipcostcents with the cost of shipping a package weighing shipweightpounds.

What does a bonus object do? a. subtracts lives b. keeps track of a player's health c. gives a player an advantage d. makes text appear