De los 400 alumnos de un colegio se conoce que: 140 alumnos practican full
contact, 160 practican karate y 120 no
practican alguno de estos deportes.
¿Cuántos practican ambos?

the inequality is:

250c+180g≥950

step-by-step explanation:

let c denotes the number of days in a week   miyoko worked as a cryptographer.

and g denotes the number of days in a week she works as a geologist.

now we are given that she earns $250 for every day she works as a cryptographer,and earns $180 for every day she works as a geologist.

now miyoko's goal is to earn more than $950 this week.

hence, the inequality could be represented as:

250c+180g≥950

-81 -56 -27 0 81

step-by-step explanation: