Answer:
y = 3( [tex]0.5^{x}[/tex] )
Step-by-step explanation:
Exponential function has the form f(x) = k [tex]b^{x}[/tex] where b > 0 and b ≠ 1
~~~~~~
3 = k × [tex]b^{0}[/tex] ⇒ k = 3
1.5 = 3( [tex]b^{1}[/tex] ) ⇒ b = 0.5
Thus, y = 3( [tex]0.5^{x}[/tex] )
