Step-by-step explanation:
1/3(6+3)
= 1/3(9)
= 3
......
Answer:
D) -122
Step-by-step explanation:
Given:

We need to find f(-4).
Now by substituting the value of x =-4 in above equation we get;

By using PEDMAS we will solve for exponential function first we get;
Now we know that 
So we get;

Now using PEDMAS we will solve division.

Now using PEDMAS we solve multiplication.

Finally by subtraction we get;

Base = 5
height = 12
Area = (5*12)/2 = 30 m²