Ron is collecting tickets for a school play and needs to determine how many people are attending the show. Several groups give him envelopes with tickets for the entire group. One group gives him 24 tickets, another group gives him 53 tickets, and a third group gives him 14 tickets. A fourth group gives him 68 tickets, a fifth group gives him 16 tickets, and a sixth group gives him 12 tickets. Ron also collects 77 individual tickets. How many total tickets does Ron collect?

Ron collected 187 Ron collected 187

8(-10x+3.5y-7)

8×-10x + 8×3.5y + 8×-7

-80x + 28y - 56

therefore

-80x+28y-56 is the correct answer

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,