Which of the following conjectures is false? a If x is odd, then x + 1 is even. b The difference of two even numbers is positive. ос Od The sum of two odd numbers is even. If x is positive, then -x is negative.

Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250