Entre Marcos y Efrén tienen 80 estampillas. Tres veces el número de estampillas que tiene Marcos es igual a 5
estampillas más que el doble de las que tiene Efrén.
¿Cuántas estampillas tienen cada uno?

Which property is illustrated by the following statement? if hxa rgi, then rgi hxa.

You got a job selling magazines door-to-door. you are paid $100 per day plus $1.50 for each magazine you sell. which recursive formula models this situation?

Raymond just got done jumping at super bounce trampoline center. the total cost of his session was $43.25 . he had to pay a $7 entrance fee and $1.25 for every minute he was on the trampoline. write an equation to determine the number of minutes (t) that raymond was on the trampoline.