Final answer:
Nasreen has $45.00 initially and spends twice the amount given by her mother, represented by 'm'. The expression for the money left is $45.00 minus twice the amount from her mother ($45.00 - 2m), which corresponds to option C.
Step-by-step explanation:
The question involves forming an algebraic expression to determine the amount of money Nasreen has left after spending at the mall. We know that Nasreen's father gave her $45.00, and her mother gave her m dollars. Nasreen then spent twice the amount of money her mother gave her, which can be expressed as 2m. We need to find the expression that represents the money Nasreen has left after this spending.
To calculate the remaining amount, we start with the initial amount from her father ($45.00) and subtract the money spent, which is twice what her mother gave (2m). Hence, the expression representing the amount Nasreen has left is:
$45.00 - 2m
With this calculation, we understand that the correct answer is option C: $45.00 - 2m.