Hig-eyxu-jrd join today link fast guys please​

Evaluate the expression for the given value of the variable 7a - 4a for a =8

F(x) = x2 − 9, and g(x) = x − 3 f(x) = x2 − 4x + 3, and g(x) = x − 3 f(x) = x2 + 4x − 5, and g(x) = x − 1 f(x) = x2 − 16, and g(x) = x − 4 h(x) = x + 5 arrowright h(x) = x + 3 arrowright h(x) = x + 4 arrowright h(x) = x − 1 arrowright

100 points? me its important ‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️‼️