7)
Read my note at the end of problem 5 in another post.
You already know this table represents an exponential function
since each y-coordinate is always the previous y-coordinate multiplied by 6.
That means b = 6, and you have
y = a(6)^x
Now we find "a". When x = 0, y = 5. That means a = 5.
The equation is
y = 5(6)^x
You take the total number of picture and multiply it by .12, which will get you the total number of black and white photos only.
600(.12)= 72
T r i a n g l e because if you cut it it becomes a triangle
This is the graph, on the x and y axis od the graph you plot the point at 4 (positive)