On her first two quizzes, Barbara averaged 6 correct answers. On the next three quizzes, she averaged 8 correct answers. What decimal number shows Barbara’s average score on all five quizzes?

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.