4. John drove for 3 hours at a rate of 50 miles per hour for a total of 150 miles. Then he drove for another 2 houps at a rate of 60 miles per hour for a total of
120miles. What waThis average speed for the whole journey?

Help plz

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,

step-by-step explanation:

you need to give us more information since we can't answer

sorry i just need to anwers this to get points

step-by-step explanation: