Which of these is the equation that generalizes the pattern of the data in the table? Explain. x f(x)
-3 -5
-1 1
2 10
5 19
A) f(x) = 3x

B) f (x) = x + 3

C) f(x) = 2x + 6

D) f(x) = 3x +4

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%)