A seed company has fescue grass seed worth 55 cents per pound and bluegrass seed worth 95 cents
per pound. How many pounds of each should be
mixed to produce 100 pounds of seed mix that will
sell for 70 cents per pound?

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,