Is y=x squared + 36 a function

The last time i bought this product , it cost $20.00 but it looks like it cost 29. 60 today? what is the increase

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.

The difference between tax advoidance and tax evasion