Heyy! i’ll give brainliest help asap pls

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

What’s the answer? and how do i solve it ?

(05.02)how many triangles can be made if two sides are 4 inches and the angle between them is 90°? 1 , 2, more than 2, or none