Question

I don't want the direct answer, I want someone to help me understand how to solve the problem, and how to get to the answer.

There are some tables and I don't wanna format them, so I have attached a word document with the tables inside it,

The Word Document is in the comments below.

Thank you for helping!

Answer 1

@triciaal @sleepyjess @Hero @ParthKohli @pooja195 @TheSmartOne @Michele_Laino @mathmale @mathstudent55 @boldjon @zepdrix


Help Please!

Thanks!

Answer 2

@triciaal ?

Answer 3

@Jaynator495 You wanted me to tag you for some reason

Answer 4

quadratic function, h(x) = 7.84x2 + 1022.16.
what value of x will produce the maximum?

Answer 5

do you know how to start with this problem?

Answer 6

@triciaal How do you find the maximum x value?

Answer 7

-b/2a

where the equation is ax^2 +bx + c

Answer 8

you can read more about it here too http://www.mathwarehouse.com/geometry/parabola/vertex-of-a-parabola.php

Answer 9

Alright, -b/2a

Answer 10

Not sure why look for a maximum of a parabola here since the parabola is convex and x for which it is maximum is infinity... I can offer an alternative way to solution, but I 'd like to know what the OP already did first. Pls let me know.

Answer 11

h(x) = 7.84x2 + 1022.16.

Answer 12

lets see

I think 1022.16 is b

Answer 13

and 7.84 is a?

Answer 14

Or wait... am I doing this wrong @triciaal ?

Answer 15

what is the value in f(x) when x = 11.42?
what is the value in g(x) ?
compare all these

Answer 16

@triciaal Why 11.42?

Answer 17

f (x) = 30x + 1000\

g (x) = 1000(1.03)x

h(x) = 7.84x2 + 1022.16.

Answer 18

f (11.42) = 30x + 1000

f (11.42) = 30(11.42) + 1000

f (11.42) = 342.6 + 1000

f(11.42) = 1342.6

Answer 19

@Needhelpstudying Here is my suggestion: create a table for the quadratic function for x=1,2,3, and 4. Then, compare - that will give you the basis for answering both questions.

Answer 20

sorry

Answer 21

g(11.42) = 1000(1.03)^11.42

g(11.42) = 1000(1.40152583)

g(11.42) = 1401.52583

Answer 22

h(11.42) = 7.84x^2 + 1022.16

h(11.42) = 7.84(11.42)^2 + 1022.16

h(11.42) = 7.84(130.4164) + 1022.16

h(11.42) = 1022.46458 + 1022.16

h(11.42) = 2044.62458

Answer 23

Follow @b87lar 's sugesstion

Answer 24

@triciaal Why 11.42?

f(11.42) = 1342.6

g(11.42) = 1401.52583

h(11.42) = 2044.62458

Answer 25

@b87lar won't the quadratic function eventually go down though?

Answer 26

let me draw a sketch of the function

Answer 27

the parabola will go up as you increase x (years). Now it is important to verify if it grows faster than the linear function, and than the exponential function - for that I suggest calculating the values for x = 1, 2, 3, and 4. You can directly compare them with the ones you have in the original word doc.

Answer 28

@b8ylar

I just graphed h(x) = 7.84x2 + 1022.16, and it's upside down...

Answer 29

@b87lar

Answer 30

@triciaal Can you help?

Answer 31

@triciaal @triciaal @triciaal @triciaal @triciaal @triciaal @triciaal @triciaal @triciaal @triciaal

Answer 32

@zepdrix

Answer 33

NVM Don't need help thanks anyways bye