15. Alex, a working student, has two part time jobs, one paying P30 per hour and another is paying P28 per hour. He must earn at least P840 per week to pay his expenses while attending college night classes. Which of the following inequalities represent the problem? A. 30x + 28y 840 B. 30x + 28y > 840 C. 30x + 28y S 840 D. 30x + 28y < 840 16. Arthur needs to buy fruits. A mango costs P 20 each while a guava cost P 15 each. He can spend no more than P 180. The total number of it will not exceed to 8. Which of the following solutions that Arthur can buy the fruits? A. (2,4) & (12,4) B. (10,2) & (2,6) C. (2, 12) & ( 1, 11) D. (6,6) & (3, 10) 17. Rhea is buying soil and plants for her garden. The plants cost P100 each and the soil cost 240 per bag. She wants to buy at least 5 plants. She cannot spend more than P1000. Which of the systems of linear of inequalities that best describe the situation. A. { 100x + 40y s 1000 x 25 C. { 100x + 1000 < 404 x 25 B. { 100x + 40y = 1000 x 35 D. { 100x + 1000 < 404 x 25 18. Hina needs to save at least 1000 for the homecoming. She works 2 jobs, earning P80/hour as a waitress and $250/hour as a tutor. She only has 14 hours to work before homecoming. What system of linear inequalities below correctly models the homecoming? A. { 80x + 250y > 1000 x + y s 14} C. { x + y 250 x + y s 80) B. (x + y 21000 80x + 250y s 14) D. { 80x + 250y s 1000 x + y s 14} 19. Jane with her friends need drinks for their snacks. A soft drink cost $15 each while a water cost $10 each. They can only spend at most 100. They are not more than 9. Is it possible for all of them to have soft drinks? A. No, it costs more than 100 C. No, only one can drink. B. Yes, it is only $90 in total, D. Yes, all of them can drink 20. Angel works at an amusement park selling tickets. The Park has 500 seats and charges 7150 for adults and P100 for children. The Park expects to make at least 262500 a day. Write a system of inequalities to model the following situations? A. { x + y S500 150x + 100y > 62500 C. { x + y S500 150x + 100y S 62500 B. (x + y 62500 150x + 100y s 500

(nasa picture po hehe)​