Question

5. The table shows the height of a plant over time. Which type of function best models the data? Write an equation to model the data.

quadratic; y = 18x2 + 85
quadratic; y = 85x2 + 18
linear; y = 18x + 85
exponential; y = 85 • 18x

Answer 1

ehm, how abou the table?

Answer 2

let me take a picture of it.

Answer 3

we are all impatient brute math nerdisitos! lol

Answer 4

Sorry my computter being a ......... So im having to send it on my phone!

Answer 5

Year
Height
(cm)
0
85
1
103
2
121
3
139
4
157

Answer 6

you could help us a lil bit out there
x y
0 85
1 103
2 121
3 139
4 157

Answer 7

of course

Answer 8

but that is not how it looks, I had to think there... math people do not think.. ;P

Answer 9

so, when x=0, y=85
among the options, which one says that?
if you put x=0 in B, what is y?

Answer 10

lol yes haha!

Answer 11

85 ??

Answer 12

in the quadratic option!

Answer 13

it finally let me send it.

Answer 14

im not that good with algebra js

Answer 15

ok.. too late.. damage to the brain has happened!!

Answer 16

huhh

Answer 17

in the one that says
\{y=85x^2+18\)
if x=0, what is y?

Answer 18

in the one that says
\(y=85x^2+18\)
if x=0, what is y?

Answer 19

plug in x=0

Answer 20

ok hold on

Answer 21

you get y=18
right?

Answer 22

oh lol yes

Answer 23

so that cannot be your answer! we strike off option B
:)

Answer 24

There's the last question.

Answer 25

ok

Answer 26

then check with the last one
\(y=85\times18x\)
if x=0, what is y?

Answer 27

ummm

Answer 28

ooh \(y=85\times18^x=85\times18^0=85(1)=85\)
so, we are good.

lets put in x=1 in A, C and D options

Answer 29

Gotcha!

Answer 30

and,?

Answer 31

its C ?

Answer 32

right on

Answer 33

really ?

Answer 34

now for 3 & 4 ;D