Which of the following are like terms

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.

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

I’m really confused and need your assist me with this question i’ve never been taught