**Answer:**

**Step-by-step explanation:**

The domain of a function is the set of input values that the function can take.

There are no restrictions on the value of x.

The domain of the function is all real numbers.

Answer:

65.45

Step-by-step explanation:

Zscore = (x - mean) / standard deviation

x = score

Percentage below C :

D = 18% ; F = 12%

Sum = 30%

Obtain the Zscore for the proportion below D

P(Z < 0.30) = -0.524

Hence, Zscore = -0.524

Put Zscore = -0.524 in the equation :

-0.524 = (x - 72) / 12.5

-0.524 * 12.5 = x - 72

-6.55 = x - 72

-6.55 + 72 = x

x = 65.45

To receive a grade of C or better, score must be atleast 65.45

**Answer:**

Option a) y = - 4x + 3 is the correct answer

**Step-by-step explanation:**

Marked co-ordinates of given line are (0,3) and (2,-5)

### gradient = (y2 - y1) / (x2 - x1)

= -5-3 / 2-0

= -8/2

= -4

### Equation of straight line

** y = mx + c**

### Equation

3 = -4(0) + c

3 = 0 + c

c = 3

y = -4x + 3

### A)

### y + 5 = -4( x - 2)

y = -4x + 8 - 5

y = - 4x + 3

The point slope equation of the line is y + 5 = -4( x - 2)

**Answer:**

24%

**Step-by-step explanation:**

150 = 54 + 72 = 126 + 24 = 150

24/100 = 24%