To find the total cost \( c \) that Vicky paid for the oranges, we need to multiply the weight of the oranges by the cost per pound.
-
Vicky bought \( 3 \frac{1}{2} \) pounds of oranges. This can be converted to an improper fraction: \[ 3 \frac{1}{2} = \frac{7}{2} \text{ pounds} \]
-
The cost per pound is \( 3.90 \).
-
The equation representing the total cost \( c \) can be written as: \[ c = \text{(weight in pounds)} \times \text{(cost per pound)} \] Substituting the values gives: \[ c = \frac{7}{2} \times 3.90 \]
You can also express it with a decimal instead of a fraction: \[ c = 3.5 \times 3.90 \]
So, the equation is: \[ c = 3.5 \times 3.90 \] or \[ c = \frac{7}{2} \times 3.90 \]
Both represent the total amount of money Vicky spent on oranges.