Acell phone costs $170 and has a tax rate of 7%. write and solve a proportion to find how much tax is paid on the cell phone.

$11.9

Step-by-step explanation:

We are given;

The cost of the cell phone is $170

Tax rate is 7%

We are required to find how much tax is paid on the cell phone.

The tax rate is 7% of the cost of the cell phone

That is;

7% of $170

also; 7/100 of $170

Thus, tax paid = 7/100 × $170

                        = $11.9

Thus, the tax paid on the cell phone is $11.9

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

right

step-by-step explanation: