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➷ x=-2, no explanation
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TROLLER
The correct answer is B) its graph is symmetrical about the y-axis.
It is not symmetrical about the x-axis; you cannot "fold" the graph across the x-axis.
Its domain is not the set of non-negative numbers; you can use negative numbers for x as well as positive.
Its range is not the set of all real numbers; we cannot get a negative y-value from squaring a number.
Complete question:
The elevation of city A is 80 feet below sea level; the elevation of city C is 16 feet below sea level. The elevation of city D is 1 over 2 of the elevation of city C. Part A: Write an expression to represent the elevation, in feet, of city D. Part B: Solve the expression and explain why the answer is negative or positive.
Answer:
-8 feets
Step-by-step explanation:
Given the following :
Elevation of city A = 80 feets below sea level
Elevation of city C = 16 feets below sea level
Distances expressed below sea level are usually expressed as negative. The sea level itself represents a reference point or 0 whereby distances below are expressed as negative a d distances above classed as positive.
Elevation of city D = 1/2(elevation of city C)
= 1/2× 16 = 8 feets below sea level
Hence, - 8 feets (since it is below sea level.
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now you know your abc's next time wont you sing with me
Step-by-step explanation: