Please help me! No one has answered me all night and I'm in quite of a bind.

Therefore, the vertex form is:

And the vertex of the function is: (-2, -79)

Step-by-step explanation:

Given the function

Factoring 15

Adding and subtracting the square of half the coefficient of .

Therefore, the vertex form is:

And the vertex of the function is: (-2, -79)

Step-by-step explanation:

Given the function

Factoring 8 from the first two terms

Next adding and subtracting the square of half the coefficient of the linear term

Factoring the perfect square trinomial

Therefore,

 is the vertex form of .

rx and sx

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -