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The numerator is x + 7.

Note that the denominator is the same, with the variable y.

Note also that you cannot combine a variable (x in this case), with a constant.

Therefore, it will look like (x + 7)/y

(x + 7) is your answer for ?

hope this helps

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.