And equation and solve a number increased by four and then doubled is the same as 28 decreased by three times the number find the number

Given:

A number increased by four and then doubled is the same as 28 decreased by three times the number.

To find:

The unknown number.

Solution:

Let the unknown number be x.

The number increased by four = x+4

And then doubled = 2(x + 4)

Three times the number = 3x

28 decreased by three times the number = 28 - 3x

Now,

Isolate variable terms.

Divide both sides by 5.

Therefore, the value of unknown number is 4.

answer: a) (0,0), (1,1), (2,8), and (3,27).

step-by-step explanation:

0^3=0

1^3=1

2^3=8

3^3=27

in effect, the exponential equation for this would me y=3^x. each x-coordinate cubed is giving the y coordinate, so a is your answer : )

if x = 1, then the answer is 3.5