Hattie had $4200 to invest and wants to earn 4.5% interest per year. She will put some of the money into an account that earns 3.2% per year and the rest into an account that earns 4.6% per year. How much money should she put into each account? Investment in 3.2% account = $

Investment in 4.6% account = $

abde or 1,2,4, 5 is the answer

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.