**Answer:**

-16.02

**Step-by-step explanation:**

I assume the "......" is a variable replacement. I will use x instead.

0.18 = x - - 18 + - 1.8

Negative + Negative = Positive

0.18 = x + 18 + - 1.8

Positive + Negative = Negative

0.18 = x + 18 - 1.8

Combine like terms

0.18 = x + 16.2

Subtract both sides by 16.2 to isolate the variable x

0.18 - 16.2 = x + 16.2 - 16.2

-16.02 = x + 0

-16.02 = x

Check your work:

Plug in -16.02 into the original equation

0.18 = -16.02 + 18 - 1.8

They should equal each other; let's check to make sure

0.18 = 1.98 - 1.8

0.18 = 0.18

They equal each other so our answer is correct

**It would be : -2.64575131**

<h2>T

**he car is about 6.6 years old.**</h2>

**Step-by-step explanation:**

**Given :** An equation for the depreciation of a car is given by , where y = current value of the car, A = original cost, r = rate of depreciation, and t = time, in years. The value of a car is half what it originally cost. The rate of depreciation is 10%.

**To find : **Approximately how old is the car?

**Solution : **

The value of a car is half what it originally cost i.e.

The rate of depreciation is 10% i.e. r=10%=0.1

**Substitute in the equation, **

**Taking log both side, **

**Therefore, the car is about 6.6 years old.**

**Answer:**

8⋅(x−3) 2

**Step-by-step explanation:**

By looking at this data, you can see that while most of the data is in between 70 and 73, the only number that isn't in that range is 78. Therefore, the term outlier describes 78in the best.