6. Here are graphs of the area covered by two different types of mold d days after they

were first measured.

area (square millimeters)

900

800

700

600

500

400

300

200

100

2

B

3 4 5

time (days)

A

6 7

a. What are the approximate coordinates of the point of intersection of the two

graphs? What does this mean in terms of the two mold populations?/nb. The area of mold A is given by the function A(d) = 100 e0.25d. When will this

mold cover 1000 square millimeters? Explain your reasoning.