(1 point) An instructor gives his class a set of 15 problems with the information that the next quiz will consist of a random selection of 7 of them. If a student has figured out how to do 8 of the problems, what is the probability the he or she will answer correctly

one that is bigger than 3 1/2

1010: 3030

is it i think

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,