Question

James needs to bring his grade up to a B (80) in reading. What does he need to get on his next quiz?
Quiz 1:77
Quiz 2:81
Quiz 3:74
Quiz 4:?

Answer 1

4 * 80 = 320

77 + 81 + 74 = 232

320 - 232 = 88

Answer 2

2+98

Answer 3

which of the following gases was most likely present in the earths earliest atmosphere
a. nitrogen
(b. hydrogen)
c. argon
d. oxygen