Diketahui = f (x) =(x +a) +3 dan f(2)= 7 tentukan : a) bentuk fungsi f(x) b) nilai f(-1) c)nilai f (-2)+(f-1) d) bentuk fungsi f (2x-5) tolong caranya juga yaa

f (x) = (x + a)+ 3, f(2) = 7
(2+a) + 3 = 7
2 + a + 3 = 7
a + 5 = 7
a = 7-5 = 2
a) f (x) = x + 2 + 3
f (x) = x + 5
b) f (-1) = -1 + 5 = 4
c) f (-2) + f (-1)
= -2+ 5 + -1+5
= 7
d) f (2x + 5 ) = (2x + 5) + 5
= 2x + 10