If the surface area of the box in the diagram is 204.25 square feet, what is the value of ‘x’? the length is 10ft

the height is 6.5ft

A. 3 ft.

B. 2.25 ft.

C. 4.5 ft.

D. 5 ft.
pls answer

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?

What is the value of x in the this question ?

What is the solution for the following system of equations? use any method to solve. y = -x +4 y = x - 2 a. ( 4 , -2) b. (2, 1) c. (3, 1) d.(3, -2)