After you multiply these function how are they used in real life
f(x) = 3x + 4 and g(x) = 4x + 3

Step-by-step explanation:

To multiply a function by another function, multiply. For example, if f (x) = 2x and g(x) = x + 1, then fg(3) = f (3)×g(3) = 6×4 = 24.

here's an example to use a function in real life

u can use an soda machine, a measurement, miles per gallon or money math

it’s the first one your welcome