Answer:
-2
Step-by-step explanation:
To solve you need to replace the variables with their numbers.
3(-1) - (-1^2)
-1 x -1 = -1
3 x (-1) = -3
-3 - (-1) =
-2
At first find the area of rectangle:
(x + 4)*(x + 1) = x^2 + 5x + 4
Then find the area of triangle:

Then you must do like this
Area of rectangle - Area of triangle = Area of the shaded
x^2+5x+4 - (

)
Answer:
20 * 4 = 80
Step-by-step explanation:
the answer is 80 cuz you have to multiply 20 ( the square) by 4 ( the number of sides) and you get 80
It will increase by 10 individuals per 100 per year