What is the vertex of
y = 2x
+ 8x + 5

Well there are numerous ways to solve this but I'll tell you the shortest one (at least according to me).

When you see a parabola of form  

y

=

a

x

2

+

b

x

+

c

the slope of its vertex is 0. We know that the formula of the slope of any instantaneous line is  

d

y

d

x

so

d

2

x

2

+

8

x

+

5

d

x

=

0

On solving this we get  

x

=

−

2

Put this in our original equation of parabola and  

y

=

−

3

This coordinates of the vertex are (-2,-3)

ok

step-by-step explanation:

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.