On a large piece of paper, dana creates a "rectangular spiral" by drawing line segments of lengths, in cm, of 1, 1, 2, 2, 3, 3, 4, 4, as shown. dana's pen runs out of ink after the total of all the lengths he has drawn is 3000cm. what is the length of the longest line segment that dana draws? (a) 38 (b) 39 (c) 54 (d) 55 (e) 30

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,