S o me one help me on this please Nd thank you don’t send me no link

Answer:
f(x) = 15 (3) ^x
Step-by-step explanation:
The form of an exponential function is
y = a b^x
a is the initial value so a = 15
y = 15 b^x
b > 1 when there is growth so
f(x) = 15 (3) ^x