F(x) = 3x - 5
f(2) = 3 (2) - 5
f (2) = 6-5
f (2) = 1
The height of the heater is about 89.3 in.
You can solve this problem with the Pythagorean Theorem. The base is a square. So half way across the middle will the right under the tip of the pyramid. We can use the measurement with the slant height to write and solve the equation below.
23.8^2 + x^2 = 90.1^2
x will be about 89.3.
Area of a circle is given by

where

is the radius
Radius of a circle is half of the diameter
We have the diameter 30 meters, so the radius is 30÷2=15 meters
Area of the circle = 
Note: The option given doesn't show the

symbol but it seems like the correct answer is option A
Answer: x=4 is a solution because if you divide both 56 and 16 by 4, you get 14/4
Step-by-step explanation: