Question

f(x) = 9x + 7
f(b) = 16
b = ? ​

Answer 1

♪Answer :

»f(x) = 9x + 7

»f(b) = 16

• x = b

»f(b) = 9b + 7

»16 = 9b + 7

»16 - 7 = 9b

»9b = 9

»b = 9/9

»b = 1✅

Answer 2

$\\ \rm\hookrightarrow f(b)=16$

$\\ \rm\hookrightarrow 9b+7=16$

$\\ \rm\hookrightarrow 9b=9$

$\\ \rm\hookrightarrow b=1$