Question

The polynomial x 3 + 5x 2 -57x -189 expresses the volume, in cubic inches, of a shipping box, and the width is (x+3) in. If the width of the box is 15 in., what are the other two dimensions? ( Hint: The height is greater than the depth.)
A. height: 19 in.
depth: 5 in.
B.height: 21 in.
depth: 5 in.
c.height: 19 in
depth: 7 in.
D. height: 21 in.
depth: 7 in.
its not c.

Answer 1

@DatChinookGuy do you think you can help with this one too

Answer 2

If width = x+3 = 15
Then x = 12
Putting 12 into the equation
x 3 + 5x 2 -57x -189 then

Answer 3

box is 1,575 cubic inches

Answer 4

The answer is B because 21 * 5 * 15 = 1,575

Answer 5

so you would plug in 12 for all the x's

Answer 6

Yes

Answer 7

okay after you find 1575 then what would you do

Answer 8

we know width = 15
So going by the multiple choice answers
we have to see what the 2 numbers times each other times 15 equal 1,575

Answer 9

If width = x+3 = 15
Then x = 12
Putting 12 into the equation
x 3 + 5x 2 -57x -189 then conduct the box which is 1,575 cubic inches. Then your answer is B because 21 * 5 * 15 = 1,575 However when doing this you MUST plug in 12 for all of the x's to signal the equation correctly and easier. Hope this helps, have a nice day :) In conclusion as said, B is your answer:
\[height: 21 inches\]
=====================
After you find 1575 you will take it down/divide it.
\[Have a nice day \]

Answer 10

oh okay i get it now thanks

Answer 11

u r welcome

Answer 12

okay i have one more question

Answer 13

No problem have a nice day, fire away with that last question! :)

Answer 14

Okay go ahead

Answer 15

What are the zeros of the function? Graph the function.
y=(x+3)(x-3)(x-4)

Answer 16

-3
+3
and +4

Answer 17

And you need a graph right?

Answer 18

The equation is
X^3 -4x^2 -9x + 36

Answer 19

i figured out the graph on my own