A scientist planted seeds in $4$ sections of soil for an experiment. Not all of the seeds grew into plants. After $20$ days, the scientist counted the number of plants in each of the $4$ sections. The results are shown in the table. Use the data in the table to determine approximately how many plants grew per square foot. Explain or show how you determined your approximation. Let $y$ be the number of plants expected to grow in $x$ square feet. Write an equation the scientist could use to model the relationship between $y$ and $x$ . Provide your approximation, explanation, and equation in the space provided.

intresting

Step-by-step explanation:

ok

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12

my answer is$ 12

step-by-step explanation:

because 15 -2=12