diketahui rumus fungsi f(x) = 3x - 2, juka f (b) = 25, maka nilai b = ...... A.13 B. 9 C -9 D. -13

f(x) = 3x - 2
f(b) = 25
b = .....

f(b) = 3(b) - 2
25 = 3b - 2
25 + 2 = 3b
27 = 3b
b = 27/3
b = 9

semoga membantu yaa

diket. : f(x)= 3x - 2
dit. : f(b)=25
jawab:
f(x) = 3x - 2
f(b) = 3×b-2=25
f(b) = 3b-2=25
= 3b=25+2
= 3b=27
= b=27/3
= b=9

Semoga membantu