The equation 4x^2+8x+15=0 is being rewritten in vertex form

Vertex form is y = (2x+2)^2 + 7  

Step-by-step explanation:

The vertex form is

y = (x-h)^2+k

Where (h,k) is the vertex.

Let

y = 4x^2 + 8x +15

Add -15 on both sides

y-15 = 4x^2+8x+15 -15

y-15 = 4x^2+8x

Making whole square formula on Right hand side (a+b)^2

(2x)^2 + 2(2x)(2)+(2)^2 = (2x+2)^2

Adding (2)^2 on both sides of the equation

y-15+(2)^2=4x^2+8x+(2)^2

y-15+4=(2x+2)^2

y-7 = (2x+2)^2

y = (2x+2)^2 + 7

So, Vertex form is y = (2x+2)^2 + 7  

$97520

step-by-step explanation:

add 6% to the value she got from selling the house.

answer: 33 ( approx)

step-by-step explanation:

since, in the linear regression formula, the slope is the a in the equation y = b + ax ( by comparing it with the general equation of line y = mx + c )

where,

here given table is,

price ($), x   :           18         23       25       29       30       33

pairs sold, y :         16         13         10       8         6       2

so, ,   ,   ,

and   ,

thus, slop of the given line is,

⇒  

⇒   ≈ 33