Which expressions represent exponential growth? check all that apply. 0.2t 1.2t 2x2 – 17 300(1.2)2y 3000(0.12)y 4y + 3 1.12x + 67

D):

Step-by-step explanation:

We have been given few choices. Which are:

A):

B):

C):

D):

E):

F):

G):

Now we have to choose those choices which represent the exponential growth.

We know that exponential growth formula is given by

where b>1

only choice which looks in that form and has base (b) >1 is choice D)

which has b=1.2

Hence D is correct.

If answer choices are not written in correct format then you just need to compare which equation is in form of where b>1. That function will be the answer.

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

answer: idk

step-by-step explanation: