Mario needs to cut 3 bookshelves from a board that is 10 feet long. The 2nd shelf is 1 foot longer than twice the length of the first shelf.
The remaining shelf is 5 feet longer than the first shelf. If x = length of
the first shelf, write an algebraic equation & solve to find the length of
all three shelves. x=1

the answer is d

step-by-step explanation:

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

throw the computer

step-by-step explanation:

answer:   (s+1)(s+4)

step-by-step explanation:

factor s2+5s+4

s2+5s+4

=(s+1)(s+4)