Meredith invested $5,500 into an account that earned 5% interest per year. when she cashed out the investment to use it as a down payment for a new car, it was worth a total of $7,739.05.

which equation describes meredith's investment based on t, the number of years she kept the account open?

a: t=7,739.05 (5,500)^0.05

b: 7,739.05=5,500(1.05)^t

c: t=7,739.05 (5,500)^1.05

d: 7,739.05= 5,500(0.05)^t

 B.

Step-by-step explanation:

The formula to find the compound amount (compounded yearly):-

, where P is the principal amount invested,  is the rate of interest and t is time period.

As per given , we have

P=$5500    ,  r=5% = 0.05   and A =  $7,739.05.

Substitute all the values in the formula , we get

Hence, the equation describes Meredith's investment based on t, the number of years she kept the account open :

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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step-by-step explanation:

a

step-by-step explanation: