Three teachers surveyed their students to find out how many of them played sports. which 2 surveys show a proportional relationship?
a. a survey of 150 student showed that 40 of them play a sport.
b. a survey of 225 students showed that 60 students play sports.
c. a survey of 175 students showed that 50 students play sports.

The probability that a college student belongs to a health club is 0.3. the probability that a college student lives off-campus is 0.4. the probability that a college student belongs to a health club and lives off-campus is 0.12. find the probability that a college student belongs to a health club or lives off-campus. tip: p(a or b) = p(a) + p(b) - p(a and b) 0.54 0.58 0.70 0.82

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2