Answer: x= -0.2
Step-by-step explanation:
437 and 250 and 422 there you goooooo
If all digits are possible and we are restricted to the 617 area code, then there are:
10^7 possible numbers
Because each digit can have 10 possible values from 0 through 9, you get
10*10*10*10*10*10*10 which is just 10^7
10,000,000 (ten million)
