Question

Donald has
x twenty-dollar bills and 1
10 ten-dollar bill.

Answer 1

y=20x+10

Explanation:

Given:

Donald has x $20 bills and 1 $10 bills.

Let y be the total amount Donald has.

To calculate his total, we multiply the value of each bill by its frequency then sum:

`y=x* 20+1* 10\\\\=20x+10`

Hence, the expression of Donald's total is given as y=20x+10