Joaquin bought a dvd for $21. He gave the cashier$40. How many different combos of $1 $5 $10 can the cashier give him for change
2 answers:
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Answer:
We know that ,
Number of zeroes in a polynomial = degree of the polynomial
( degree of polynomial = the highest power in the polynomial )
therefore ,
hope helpful~
You probably know that for , we have
Your sum starts at , so it's equivalent to
so the answer is A.