Answer:
[tex]y=3*2^{x}[/tex]
Step-by-step explanation:
A vertical stretch of a function means the output values have changed by a factor of 3 or multiplication by 3. Recall, an exponential function has the basic form
[tex]y=ab^{2}[/tex].
If our equation is [tex]f(x)=2^x[/tex], then a=1. To stretch it vertically by a factor of 3, we multiply a by 3. So 1(3)=3. The value of a now becomes 3.
[tex]y=3*2^{x}[/tex]
