Answer:
512
Step-by-step explanation:
[tex]3x=18[/tex]
[tex]\implies x=6[/tex]
[tex]y+1=4[/tex]
[tex]\implies y=3[/tex]
[tex]2^x \cdot 2^y=2^6 \cdot 2^3=2^{(6+3)}=2^9=512[/tex]
