Question

rod is hosting a dinner for all his friends in Edmonton. he has hired a company to cater for him, charging $150 plus $13 for every person that attends. (A) determine how much it will cost if 18 of his friends attended the dinner. (B) if it costs $579 to cater the dinner, how many of rod's friends are attending?​

Answer 1

1. $384

2. 33 friends

Explanation:

case 1:

150+ 13*18

150+ 234

= $384

case 2:

150 + 13x = 579

13x = 579-150

13x = 429

x = 429/13

x=33