What is 1,000,000 written as a power of ten? .

a. 107

b. 106

c. 10^6

d. 10^7

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)