Question

Which of the following functions has the largest value when x = 4?

e(x) = x2 + 6x + 21
m(x) = 8x
v(x) = 31x

A)e(x)
D)v(x)
C)m(x)
D)All the functions are equal at x = 4.

Answer 1

@misty1212

Answer 2

@ganeshie8

Answer 3

@jagr2713

Answer 4

you just want to plug in " x = 4" for each of the functions :)
Let's start with
\[e(x) = x^2 + 6x + 21\]
So when we replace all the x's with 4, we get this equation.
\[e(4) = 4^2 + 6(4) + 21 = ?\]

Answer 5

WAIT

Answer 6

okey dokey

Answer 7

61?

Answer 8

yep :) good job!
so, e(4) = 61
Now we do the same thing with the other functions :)
\[m(x) = 8x \]
plug in x = 4 and we get:
\[m(4) = 8(4) = ?\]

Answer 9

32?

Answer 10

yes good!
Now next function:
\[v(x) = 31(x)\]
plug in x = 4
\[v(4) = 31(4) = ?\]

Answer 11

124?

Answer 12

yeeees :D
So now which of the functions had the largest value when x = 4?

Answer 13

its A?

Answer 14

not quite... we already worked out what EACH function equals when x = 4,
e(4) = 61
m(4) = 32
v(4) = 124
So which one is has the largest value?

Answer 15

V(4)

Answer 16

yesss so that means v(x) would be the largest function when x = 4

Answer 17

SO the answer its B? RIGHT

Answer 18

yes...

Answer 19

Can you help with two more please?

Answer 20

i can try lol

Answer 21

Indicate whether the following statement is true or false: An exponential growth function never exceeds a quadratic function with a positive leading coefficient.
A)TRUE
B)FALSE

Answer 22

ohh xD i can't answer that question, sorry!

Answer 23

ONE MORE?

Answer 24

LOL close this question and post it as a new one so other people can help you answer them xD I'm not very good with this stuff hahaha.