What is 55900 rounded to the closest million

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

What are the domain and range of the function f(x)=2^x+1