9514 1404 393

**Answer:**

y-4 = -2(x+1)

**Step-by-step explanation:**

The point-slope equation of a line is ...

y -k = m(x -h) . . . . . line with slope m through point (h, k)

You have m = -2 and (h, k) = (-1, 4). Putting these numbers into the above form gives ...

** y -4 = -2(x +1)**

Part a: 30+10d That is your equation. 30 for the start and 10 more for each additional day.

Part b: So there are 4 additional days. Let's fill in the equation and solve.

30+10*4

30+40

$70

The answer is $70

**Answer:**

**Step-by-step explanation:**

Lets call

equation 1

equation 2

using equation 2, we would make y the subject of the formula as it would be easier

This would now be called our equation 3

Now the next step is to substitute equation 3 in equation 1

Divide both sides by 27

Substitute the value of x in equation 2

**Answer:**

2

**Step-by-step explanation:**

you add 1 to 1 and that gives you 2

Hi there!

The answer is

Additional note:

To find the value of x, we only need to multiply both sides of the equation by 4