Answer:
504 combos
Step-by-step explanation:
Cannot use digits twice and last is '7'
9 digits for first place choice
8 digits for second place
7 digits for third place
only '7' for fourth place 9 x 8 x7 = 504 combos
Use m-a-t-h-w-a-y they are awesome. Or m-y-m-a-t-h-l-a-b
Step-by-step explanation:
these are the functions
and the others are not a functions because the domain can't match to more than one
(8a^5 +2b) + (-6a^5 +2b) = (2a^5 +4b)
hope so much that i ve understood it right theses fives are exponents of ,,a"