
The slope is 5/3
For the graph, we have to see that (3,5) and (21,35) are in the line, , or that the equation of the line is

In the case A), a point in the line is (3,5) so the answer is A.
32:48
Divide by 2
16:24
Divide by 4
8:12
Divide by 8
4:6
Divide by 16
2:3
ANSWER
y=7
EXPLANATION
The horizontal asymptote of an exponential function

is y=c.
The given exponential function is

When we compare to

c=7, therefore the horizontal asymptote is y=7.