Question

find th maximum y-value on the graph on y=f(x). f(x)=-x^2+10x+3 the maximum y-value is y=

Answer 1

First, find derivative

Answer 2

how do i do that?

Answer 3

What course are you taking? what mrtods have you been using?

Answer 4

Algebra 2

Answer 5

are you able to help me

Answer 6

First find the x coordinate of the vertex\[\frac{ b }{ 2a }\]

Answer 7

how do I do that

Answer 8

\[ax ^{2}+bx+c=0\]

Answer 9

okwhat do I do now

Answer 10

\[-x^{2}+10x+3\]\[ax ^{2}+bx+c\]a=-1
b=10
c=3
Do you take notes in class?

Answer 11

yes I do take notes but having problems undertanding it, so what woud y=

Answer 12

So you find x-coodinate of the vertex\[\frac{ b }{ 2a }\]

Answer 13

10*2

Answer 14

Take it one step at a time. Just plug in the values in \[\frac{ b }{ 2a }\]

Answer 15

do not understand

Answer 16

Just read above, I told you what is a, what is b. Just put the values of a and b in\[\frac{ b }{ 2a }\]

Answer 17

b is 10 anda s 1

Answer 18

You put it in the expression\[\frac{ 10 }{ 2(-1) }\]

Answer 19

ok

Answer 20

what do i do nxt

Answer 21

That expression simplifies to a number. You need to get that number.

Answer 22

can you tell mehow to simplifies te exprsson

Answer 23

would it be 5

Answer 24

You need one-on-one time with your teacher or a tutor. Print out these messages and tell them you are having trouble following.

Answer 25

wtever guess you cannot hep me

Answer 26

I did cotact a tutor and they s nt helpful