The number of ways 4 digit numbers can be forms using the digits 0 to 9 with no number repeated is given by

The probability that one of the numbers is 9876 is given by
Answer:
A function with a positive constant other than 1 raised to a variable exponent.
Step-by-step explanation:
Answer:
Joshua worked 4 hours and luke worked 7
Step-by-step explanation:
25x + 35x +105 = 345
60x = 345 - 105
60x = 240
x = 240/60
x = 4 hours