A cell phine postpaid costs P300/month with unlimited calls to all networks, 100 text messages per month, and no data plan. After 100 text messages, it costs 50 fore each text messages you will send. How much will it costa if you send 500 text messages?

**Lesson Steps**:

Send 500 messages per month cost:

- 300 for monthly subscriptions

- (500-100)*50= 20000

In total per month you pay 20000+300=20300

**Answer**:

500

**Grade**: 11

**Level**: Highschool

**Subject**: Math

**Topic**: Algebra