What is 7/8 in decimal form

The table shows the balance of a money market account over time. write a function that represents the balance y (in dollars) after t years.

Which of the following is true for the relation f(x)=2x^2+1

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%)