Respuesta :
Sale price of the mattress is [tex]\boldsymbol{\$700}[/tex]
Mattress that is of [tex]\boldsymbol{\$ 1,000}[/tex] is sold at [tex]\boldsymbol{30\%}[/tex] discount.
Original price of mattress [tex]=\$1,000[/tex]
Percentage of discount on mattresses [tex]=30\%[/tex]
So,
Amount of discount on mattresses [tex]=\frac{30}{100}(1,000)[/tex]
[tex]=\$300[/tex]
Therefore,
Sale price of the mattresses [tex]=\$1,000-\$300[/tex]
[tex]=\boldsymbol{\$700}[/tex]
For more information on 'sale price':
https://brainly.com/question/20418815?referrer=searchResults