To receive a grade a, the average of four 100-point exams must be 90 or better. if a student received scores of 89, 82, and 94 on the first three exams, what minimum score does he need on the fourth exam to earn an a?

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