**Solution:** The function that represents the Grace earning each week is defined as , **where is in dollar and is the time in hours. **domain of the function is** [10,20].**

**Explanation:**

Let, Grace works for h hours per week.

For one hour she get $9.

For h hours she get .

So, the function that represents the Grace earning each week is defined as .

It is given that she works from 10 to 20 hours per week, therefore the value of h lies between 10 to 20. Hence the Grace's earnings for each week is defined as ** **and the domain of the function is** [10,20]**.

**Let's solve for g.
**

**gx=(−5(x−3))(2)
**

**Step 1: Divide both sides by x.
**

**gx
**

**x
**

**=
**

**−10x+30
**

**x
**

**g=
**

**−10x+30
**

**x
**

**Answer:
**

**g=
**

**−10x+30
**

**x**

**Answer:**

A

**Step-by-step explanation:**

The answer is 45. hope this helps!!!!

<span>We are looking for the value of x if we know the value of y=0.8 and the equasion is: 4x + 8y = 40. First we separate what we don't know on the left side and what we do know on the right: 4x = 40 - 8y. we know y=0.8 so we put that in the equation and we get: 4x = 40 - 8*0.8. Now we have: 4x = 40 - 6.4=33.6. Finally, we divide the left side and the right side by 4 and we get: x=33.6/4=8.35. So x=8.35.</span>