Jari invests in a cd with an annual interest rate of 6.90% compounded quarterly. how many years will it take for jari's investment to double. round your answer 4 decimal places and include a label

  10.1246 years (approx)

Step-by-step explanation:

Here, She invests in a CD with an annual interest rate of 6.90% compounded quarterly.

Let the initial amount or principal = P

And, Let after t years it is doubled.

Therefore,

⇒

⇒ ( By taking log both sides)

⇒

⇒t= log 2/log 1.07080599536= 10.1245504311≈10.1246 years

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step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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