Answer:run:83.43 miles

Walk:39.11 miles

Step-by-step explanation:

There are 52.143 weeks in a year;

So each week she runs 1.6 miles=1.6*52.143=83.43 miles

Walks 0.75 miles=0.75*52.143=39.11 miles

**Step-by-step explanation:**

Given:

Taking the partial derivative of the above equation with respect to z, we get

Collecting all terms containing we get

Then

**Answer:**

The equation of the line is y = -1.5x + 3

The y-intercept is (0,3)

The value of k is 3.

**Step-by-step explanation:**

y - 0 = -1.5 (x - 2)

y = -1.5x + 3

**Answer:**

12 + r or r + 12

**Step-by-step explanation:**

Either way can be written as the expression 12 is more than r or x

**Answer:**

**36x**

Multiply x and 9

Multiply x and 1

The x just gets copied along.

The answer is x

x

9*x evaluates to 9x

Multiply 4 and 9x

Multiply 1 and x

The x just gets copied along.

x

4*(9*x) evaluates to 36x

The final answer is

36x