. Paul signs up for a new cell phone plan. He is offered a discount for the first five months.
After this period, his rate increases by $8.50 per month.
His total cost at the end of the year is $245.50.
Paul wrote the following equation to represent his plan.
5x + 7(x + 8.50) = 245.50

Part A:
How much, in total, will Paul pay during the five discounted months of his plan?

Part B:
Explain and justify how you arrived at your answer.

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

probability for j is 1/4

while

a is 1/6