Acontainer contains water at temperature 80 degree celcius. after every 10 minutes, the change in temperature is - 4 degree celcius. after how much time will the temperature of the water be 20 degree celcius ?

Find the equation using the point (4,8)

Can someone tell me if this is perpendicular? !

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