6. In a college, 60 students enrolled in chemistry, 40 in physics, 30 in biology, 15 in chemistry and physics, 10 in physics and biology, 5 in biology and chemistry. No one enrolled in all three. Using Venn
diagram find how many are enrolled in exactly one subject only.
Can some one help me with the set up of the Venn diagram and all that I may need to know!!! Worth 20 points!

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

How is working backward similar to solving an equation?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?