Richard had his car repaired at a body shop. The parts cost $100.
The technician charged $52 per hour.
His total bill was $308.

How many hours did the technician work on Richard's car? Enter the numerical value only.

4 hours

Step-by-step explanation:

Because if you multiply 1, 2, 3, 4, etc. by 52, you go past 308. Then, you also can get 208, and the parts are 100;

yeet

step-by-step explanation:

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! )