La meta de John es tener más de -7−7minus, 7 pesos en su cuenta de banco al final del mes. La variable ddd es el número de pesos en la cuenta de banco de John al final del mes.
Escribe una desigualdad en términos de ddd que se verdadera solamente si John cumple su meta mensual

The westins and the shermans live in the same city and pay the same sales tax rate, and both families made $14,000 in taxable purchases last year. if the westins made $86,000 and the shermans made $33,000 last year, is the sales tax in their city an example of a regressive tax? yes, because the westins and the shermans both paid the same sales tax rate. b. no, because the shermans paid a higher percentage of their income in sales tax than the westins did. c. no, because the westins and the shermans both paid the same sales tax rate. d. yes, because the shermans paid a higher percentage of their income in sales tax than the westins did.