If f(x) = x - 4, then (fof)(3) = =
a. 1
b. -1
c. -5
d. 5

Itook a better photo of the question so y’all can see it i hope it’s a fine photo

Ineed with number 17 i don’t get it at alll

Which quadratic function best fits this data? x y 1 32 2 78 3 178 4 326 5 390 6 337 a. y=11.41x2+154.42x−143.9 b. y=−11.41x2+154.42x−143.9 c. y=11.41x2+154.42x+143.9 d. y=−11.41x2+154.42x+143.9