At least they admitted this is algebra not geometry. You'll get the same question next year but they'll call it geometry.
The area is the product of the sides:

We just distribute and collect terms:



Answer: 3rd choice
I believe that is cubed. sense cubic unit is 3 and that has 3 numbers after the decimal point.
Answer:
Relationship is :linear
Rate of change : 3
Y-intercept : (0,1)
Equation that models the data : y=3x+1
Step-by-step explanation: