Answer:
16 years old
Step-by-step explanation:
The age of his sister = 12 years old
Gasta is 4 years older than his sister,
The age of Gasta
= 4 + 12
= 16 years old.
Therefore,
Gasta is 16 years old.
let Gastas age be g
since Gasta is four years older
g=12+4
g=16 years old
1/18
f(t+1)= -4t+2
Subsitute the given vaule into the function and evaluate.
