The elevation of city a is 72 feet above sea level; the elevation of city c is 24 feet above sea level. the elevation of city d is 1 over 4 of the elevation of city c.
part a: write an expression to represent the elevation, in feet, of city d. (5 points)
part b: simplify the expression and explain why the answer is negative or positive. (5 points)

Step-by-step explanation:

Part A:

In math, the word "of" means "multiplied by".

So if the elevation of city D is 1/4 of the elevation of city C, then our equation is 1/4*C, or C/4

Part B:

But we already know that C = 24, so we can just plug in 24 for C in our equation:

24/4 = 6 feet

Explanation: The answer is positive because when you're dividing two positive integers, there's no possible way to get a negative number.

a negative exponent is translated as follows:

so, we have