7. Find the length of X (in the picture) pls I need help. (GIVING PPINTS AND )​

Write an explicit formula that represents the sequence defined by the following recursive formula:

Which of the following lines is not parallel to the graph of y = 4x +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%)