To calculate the price after a 35% discount, you first need to find out how much of the original price \( p \) is being deducted as the discount.
A 35% discount means that you will pay 65% of the original price (since 100% - 35% = 65%).
To represent the price after the discount, you can use the following expression:
\[ \text{Price after discount} = p \times (1 - 0.35) = p \times 0.65 \]
Thus, the expression that represents the price after the discount but before tax is:
\[ 0.65p \]