8. the sum of twice an unknown, x, times itself added to seven times that unknown is -3. which
of the following could be the value of the unknown x?
(a) -2
(b)2
(c) -3
(d) 3 (e)

No A,B,C, or D              Answer E  (other)  -3/9

Step-by-step explanation:

2x+7x=-3

9x=-3

x=-3/9

-3/9*2=-6/9

-3/9*7=-21/9

ADD BOTH  

-27/9=-3

answer: 3.26019516

step-by-step explanation:

let f (x ) is a function and c be a positive real number,   the graph of the function g (x ) = f (cx ) is represented as follows.

when, c > 1,   the function compresses it in the x - direction.

when, 0 < c < 1, the function stretches it.

the function is g ( x ) = (9x )2.

the heighest power of x in g ( x ) = (9x )2 is 2, so the parent function is square function.

the equation of parent function is f ( x ) = x 2 .

the function is g ( x ) = (9x )2 and the parent function is f ( x ) = x 2 .

so, the functions f and g have the following relationship.

g ( x ) = f ( 9x ).

compare the function g ( x ) = f ( 9x ) with g (x ) = f (cx ).

c = 9 ( > 1 ).

so, the function g (x ) = (9x )2 compresses it in the x - direction.

step-by-step explanation: