How do you write $4 million in scientific notation?

X-10/4 when x = –18 a 7 b –2 c –7 d 2

Reading tests are compared for two students. sara got 98, 100, 65, 78, 98, 46, 100, 100, 45, and 50 on her reading test. lee got 97, 67, 89, 99, 100, 45, 79, 89, 58, and 67 on his reading test.

What is the answer to this problem? ignore the work. what is the correct answer?