A recent study of the lifetimes of cell phones found the average is 24.3 months. The standard deviation is 2.6 months. Assume cell phone life is normally distributed. If a single phone is selected, find the probability the lifetime of the phone will be less than 25.5 months.

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.

add an image, and i will answer

step-by-step explanation:

it is not that hard all u have to do is plot the graph

step-by-step explanation: