An error occurred in your bookkeeping department this month. the price of one of the smart phones that you sell is $489. several customers were charged $565 for the phone instead. you know that the total sales for this month were $213,873 and that 401 phones were sold. how many phones were sold at the wrong price?

she played for 18.75 hours.

step-by-step explanation:

if she played 2/4 of a hour on tuesday. and there is 60 minutes in an hour and 60 divided by 4 is 7.5. and she played 2/4 of an hour on thursday then again 60 divided by 4 is 7.5, you add 7.5+7.5=56.25. now you have to do 1/4 of an hour, it equals 3.75. now you have to add them all up. 3.75+7.5+7.5=18.75

i hope this and i hope you get it right. it took me a while to get this done for you. : )

phosphate, calcium ion, chloride ion, neon atom

step-by-step explanation: