13 Olu is going to take at random a counter from a bag.
The probability that he will take a red counter is 0.6
Olu writes down the colour of the counter.
He then puts the counter back in the bag.
Olu does this 50 times.
Work out an estimate for the number of times that Olu takes a red counter from the bag.
(Total for Question 13 is 2 marks)

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point

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,