Elice says, "If you subtract 15 from my number and multiply the difference by-7, the result is -175." What is Elice's number?
1. Identify the variable.
2. Write an equation.
3. Solve.
4. Write your answer in a complete sentence.
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step-by-step explanation:

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.

the answer is b.

step-by-step explanation: