1. 5y – 8 when y = 4 2. 4 +5z/3 when z = 6
3. 20 - 2 + 4 * 2
and can you please show your work is that i need to show my work so pleasee help me this is going to literaly save my life PLEAS

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