The probability that a computer running a certain operating system crashes on any given day is 0.12. find the probability that the computer crashes for the first time on the twelfth day after the operating system is installed.

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

its adding 5.5 each time

step-by-step explanation: