Answer:
$11,250
Explanation:
Yvonne earns a fixed amount of $1,850 per month and want to earn $2,300. The difference is

This difference is her commission. If she earns the commission of 4% on the amount of goods that she sells, then
$x - 100%
$450 - 4%
Make a proportion:

Yvonne must sell $11,250