In an exam, there is a problem that 60% of students know the correct answer. however, there is 15% chance that a student picked the wrong answer even if he/she knows the right answer. and there is also a 25% chance that a student does not know the right answer but guessed it correctly. a. what is the probability that a student knows the right answer and gets it right? b. what is the probability a student doesn’t know the right answer and gets it right?

a is the correct

1; 35 is the ratio

step-by-step explanation:

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,