If a stack of 40 nickels fits snugly in the coin wrapper shown, how thick is 1 nickel?

the volume is the product of the area of the base, 3x(3x+4), and the height, 3x-1

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.

thats not a system of equations, that is a solution