Question

Please answer part a and b questions are in the picture

Answer 1

Part A

we have that

A(4) ----> looking at the graph

A(4) means----> population in the year 1994

so

A(4)----> less than 2 million

and

B(4) -----> greater than 2 million

therefore

the answer Part a is option B

Part B

there is only one value of t where A(t)=B(t)

the value of t is 6 (the year 1996)