Eldorado student council is having a bake sale to help buy the student body matching shirts! They make $2 off of each cupcake they sell, and $3 off of
each brownie they sell. Let c represent the number of cupcakes they sell,
and b represent the number of brownies. How much money will the Eldo
student council make as an ALGEBRAIC EXPRESSION?

2c + 3b= $

Step-by-step explanation:

if they make 2 dollars for every cupcake and 3 dollars for every brownie they just need to plug in however many cupcakes into C and however many brownies to B to find their product

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

1.true 2.false? ? i think. .

step-by-step explanation: