El día de ayer, un empleado de una tienda de aparatos electrónicos tuvo una venta total de $6,290. Los aparatos que vendió son 4 teléfonos celulares del mismo precio y una televisión de $2,890. ¿Qué ecuación resuelve este problema? * 4x = 6,290
2,890x = 6,290
x + 2,890 = 6,290
4x + 2,890 = 6,290

Abank manager wants to encourage new customers to open accounts with principals of at least $2 comma 500. he decides to make a poster advertising a simple interest rate of 3%. what must the principal be if the bank manager also wants to advertise that one can earn $10 the first month? can the poster correctly say, "open an account of $2 comma 500 and earn at least $10 interest in 1 month! "?