Answer:
[tex]2t^3+15t^2+19t+6[/tex]
Step-by-step explanation:
Height of the Rectangle[tex]=t^2+7t+6[/tex]
Width of the Rectangle[tex]=2t+1[/tex]
Area of the Rectangle = Height X Width
[tex]=(2t+1)(t^2+7t+6)\\=2t(t^2+7t+6)+1(t^2+7t+6)\\=2t^3+14t^2+12t+t^2+7t+6\\$Collect like terms\\=2t^3+14t^2+t^2+12t+7t+6\\Area=2t^3+15t^2+19t+6\\[/tex]
The area of the rectangle is [tex]2t^3+15t^2+19t+6[/tex]