the position y(t) = 4t − 4. When t = 0, x(0) = −2, y(0) = −4.(D)(B) We want the accumulated number of people to be 100:20 h^2 + 10 h − 100 = 0
10(2h + 5)(h − 2) = 0
This occurs at h = 2 hours after 8 A.M.(C) Average velocity = (A) Average volume = (B) The number of new people who hear the rumor during the second
week isBe careful with the units! The answer is the total change, of course, in
F(t) from t = 7 to t = 14 days, where F′(t) = t^2 + 10 t.(B) Total gallons =