Ipick two whole numbers $x$ and $y$ between $1$ and $10$ inclusive (not necessarily distinct). my friend picks two numbers $x -4$ and $2y-1$. if the product of my friend's numbers is one greater than the product of my numbers, then what is the product of my numbers?

Step-by-step explanation:

We have a quadratic equation in z, given as:

with roots

The sum of roots is given by:

This implies that

Also product of roots is given by:

This implies that:

Therefore

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total