Question

Andre and Elena knew that after 28 days they would have 228 coins, but they wanted to find out how many coins that actually is. Andre wrote:

228=2⋅28=56
Elena said, “No, exponents mean repeated multiplication. It should be 28⋅28, which works out to be 784.” Do you agree with either of them? Explain your reasoning.

Answer 1

no, exponents are how many times the base is used, it would be 2x2x2... so on until there are 28 2s

Explanation: