Julie is in a singing competition and needs an average score of 9.1 to make it to the next round. there are four judges. the first three judges gave scores of 8.8, 9.5, and 9.2.
what equation can you solve to determine the lowest score the fourth judge can give for julie to move on?

Solve the equation

,

where is the minimum score of the fourth judge.

At least 8.9 points.

Step-by-step explanation:

Let the score of the fourth judge be .

The average score is the sum of the four judges' score divided by the number of scores. That is:

.

The minimum average score needs to be greater than or equal to . In other words,

.

Multiply both sides of by four.

.

Subtract from both sides of the equation:

.

In other words, the minimum score of the last judge is for Julie to move on.

answer: what are the following choices

this is the formula: v = the value of investment at the end of the time period

p = the principal amount (the initial amount invested)

r = the annual interest rate

n = the annual frequency of compounding (how many times a year interest is added)

t = the number of years the money is invested

^ means raise to the power of