Use technology or a z-distribution table to find the indicated area.

suppose ages of cars driven by company employees are normally distributed with a mean of 8 years and a standard deviation of 3.2 years.

approximately 75% of cars driven by company employees are older than what age?

a. 2.1

b. 4.8

c. 5.9

d. 10.2

D

Step-by-step explanation:

First we find the z-score corresponding to P(z < ?) = 0.75.

Using a table or calculator, z is between 0.67 and 0.68.  We can estimate z = 0.675.

Now finding the x value that gives us that z-score:

z = (x - μ) / σ

0.675 = (x - 8) / 3.2

x = 10.2

Answer D.

The answer is 5.9.

Step-by-step explanation:

I just took the K12 test

answer: idk

step-by-step explanation:

income. 10x+1300

expenses 3x+(1800+1500)

expenses 3x+3300

to break even:

income = expense,

10x + 1300 = 3x + 3300,

solve for x.

step-by-step explanation:

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