Final answer:
Leela saved Rs. x and received an additional Rs. 45 from her mother. The total amount of money she has is represented by the algebraic expression x + 45, making the correct answer B. x + 45.
Step-by-step explanation:
The question involves basic algebra and addition in relation to finances. If Leela saved Rs. x from her last month's pocket money, and her mother gave her an additional Rs. 45 this month, we can determine the total amount of money she currently has by performing a simple addition of these two quantities.
The expression to represent the total amount Leela has is x + 45. This is because she saved an amount expressed by the variable x and then received an extra Rs. 45 from her mother.
Therefore, the correct answer to how much money Leela has in all is option B. x + 45.