4more than a number, then divide the result by 12:

5+2x=a

asdasdsaadsaddsasds

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.

in my opinion, i think that both of them aren't that hard, but if i had to choose one, i would say algebra because you have to do exponents and everything.