The dimensions in inches of a shipping box can be expressed as width x, length x + 1, and height x - 4. the volume is 84 ft^3. find the dimensions of the box in feet.

1, 1, 4
2, 2, 21
2, 6, 7
3, 4, 7

? if somebody can put this into an equation for me, i can do the rest.

The dimensions of the box are

Step-by-step explanation:

we know that

The volume of a box in the shape of a cube is equal to

where

W is the width of the box

L is the length of the box

H is the height of the box

In this problem we have

Substitute the values in the formula of volume

Using a graphing tool

Solve the cubic function

see the attached figure

The value of x is equal to

the dimensions of the box are

option c) graph of line going through 1, 4 and 3, 10

step-by-step explanation:

let y equal to margo's coin collection

let x equal to number of years

at the begining x=0, y=1 → point=(x,y)→point=(0,1)

she adds 3 coins per year, then y=1+3x

at x=1, y=1+3(1)=1+3→y=4→point=(x,y)→point=(1,4)

at x=3, y=1+3(3)=1+9→y=10→point=(x,y)→point=(3,10)

the graph of line going through (1, 4) and (3, 10), then the option c is the correct.