 Hello and welcome to the session. In this session we will discuss a question which says that the following expression shows Janie's earning by babysitting where M is the time spent in hours by Janie in a month on babysitting and B is the money earned in dollars and we have to find that how much money does Janie earn if she spends 5 hours in babysitting. Now let us start with the solution of the given question. Now here this expression is given to us so given B is equal to 20 M plus 5. Now here we have two variables that is the variable B and variable M. Also here we have two operations that is the operation of addition and here we have the operation of multiplication. Also we know that here M is time spent in hours by Janie and B is money earned in dollars. And now we have to find that how much money does Janie earn if she spends 5 hours in babysitting. Now here it is given that Janie spends 5 hours in babysitting. This means here it is given that M is equal to 5. Now for M is equal to 5 we have to find the money earned by Janie that means for M is equal to 5 we have to find the value of B. So for M is equal to 5 B will be equal to 20 into 5 plus 5. Now for solving this first of all we will solve the operation of multiplication. So this is equal to 20 into 5 which is 100 plus 5. And now we will solve the operation of addition. So this is equal to 105. So for M is equal to 5 as B is equal to 105 dollars. Hence Janie earns 105 dollars on babysitting for 5 hours. So this is the solution of the given question. And that's all for this session. Hope you all have enjoyed this session.