Which statement is correct about the function y = x2 – 2x – 143?

a)in factored form, the function is y = (x – 13)(x + 11), so the zeros of the function are x = –13 and x = 11.
b)in factored form, the function is y = (x + 13)(x – 11), so the zeros of the function are x = –13 and x = 11.
c)in factored form, the function is y = (x – 13)(x + 11), so the zeros of the function are x = 13 and x = –11.
d)in factored form, the function is y = (x + 13)(x – 11), so the zeros of the function are x = 13 and x = –11.

C:  f(x) = (x - 13)(x + 11)

Step-by-step explanation:

Please use " ^ " to indicate exponentiation:  y = x^2 – 2x – 143.

x^2 – 2x – 143 factors into (x - 13)(x + 11).  Note that -13x + 11x = -2x, which matches the middle term of the given function.

Thus, the zeros are {-11, 13}

Answer C is correct:  f(x) = (x - 13)(x + 11).

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations:

13664

step-by-step explanation:

=cross multiply

=100 x = 13664