21. A manufacturer of plasma televisions has determined that the televisions require servicing after a mean of 62 months, with a standard deviation of 4.5 months. What length of warranty should be offered, if the
manufacturer wants to repair less than 1% of the televisions under the warranty? [2]

options a,b,c are the right answer.

step-by-step explanation:

a linear parent function is always represented as y = x

if we write this function in the form of y=mx+c

⇒

or  

now if we plot a graph we will find these characteristics:

1) y intercept of the graph is zero so its a straight line passing through origin.

2) as we can see in both the forms of function written, values of x and y may be either positive or negative for the positive slope means points on the graph are either in first quadrant or in third one.

3) it's slope is one.

1. 2

2. 11

3. 5

4. 6

5. 7

6. 5

7. -1

8. 1

step-by-step explanation: