Heeelp. the owner of the “cd universe” website just bought 1000 cds by the same musical artist. each cd cost $6.45. cd universe decides to sell them to its customers for $12.95 each. what formula could be used to calculate the profit/loss, p, for selling n cds?

Step-by-step explanation:

Given :

The owner of the “CD Universe” website just bought 1000 CDs

Each CD cost $6.45. CD Universe decides to sell them to its customers for $12.95 each

To Find:  What formula could be used to calculate the profit/loss, p, for selling n CDs?

Solution :

Cost of each CD is $12.95

Cost of 1000 CDs = 6.45*1000=$6450

Selling price of each CD = $ 12.95

So, Selling price of n CDs = $12.95n

So, formula could be used to calculate the profit/loss, p, for selling n CDs :

Hence formula could be used to calculate the profit/loss, p, for selling n CDs is

0.273 = 27.3% probability that she was late on Thursday.

Step-by-step explanation:

On time on Monday, late on Thursday:

Possible outcomes (tuesday-wednesday-thursday).

on time(0.7 probability) - on time(0.7 probability) - late(0.3 probability)

on time(0.7 probability) - late(0.3 probability) - late(0.2 probability)

late(0.3 probability) - on time(0.8 probability) - late(0.3 probability)

late(0.3 probability) - late(0.2 probability) - late(0.2 probability).

What is the probability she was late on Thursday?

Sum of these four outcomes. So

0.273 = 27.3% probability that she was late on Thursday.