H(t)=(t+3)^2+5

over which interval does h have a negative average rate of change?

choose 1

(choice a)

−2≤t≤0

(choice b)

1≤t≤4

(choice c)

−4≤t≤−3

(choice d)

−3≤t≤4

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)

Can someone explain to me how to do

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.