Which of the following equations have exactly one solution? A) 6x+15=6x+15 B) 6x-6=15x+15 C) 6x-6=6x+15 D)6x-15=6x+15

It's B

Step-by-step explanation:

I found the ans. in Khan Academy

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.