A country's postal service will accept a package if its length plus its girth (the distance all the way around) does not exceed 78 inches. Find the dimensions (in inches) and volume (in cubic inches) of the largest package with a square base that can be mailed.

E=MC SQUARE²

Step-by-step explanation:

BECAUSE country's postal service will accept a package if its length plus its girth (the distance all the way around) does not exceed 78 inches. Find the dimensions (in inches) and volume (in cubic inches) of the largest package with a square base that can be mailed.

my guess would be b and d, but i didn’t actually get out the pen and paper. lol

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places