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ANSWER

EXPLANATION
The given function is

Let

Interchange x and y to get:

Solve for y,

Take square root of both sides to get,

This is the same as:

Therefore the inverse is

The answer is 12+k because sum means addition and it says 12 and k therefore you and 12 and k together and the algebraic expression would be 12+k
C. The lower quartile (of a box-and-whisker plot) is the median of the lower half of the data.
Also referred to as "Q1"
12.96 can be rounded to 13 if you're rounding to the nearest tenth and ones digit. If it is the tens digit, 12.96 can be rounded to 10.