Is my algebra book correct?

Question

Pré álgebra for dummies Brasil edition

Fast multiplication with exponents

took a job that pays you 1 cent the first day, 2 cents Here's an age-old question that still raises eyebrows: Imagine that you you on the second day, 4 cents on the third day, and so on, doubling the value every day, like this:

1 2 4 16 32 64 128 256 512

As you can see, in the first ten days of work, you would earn a Over \$10 (actually \$10.23 )

Is this correct 100 cents =1 dollar———>512 cents=5.12 dollars

The statement says is 10 dollars..

Does this answer your question? Deriving Sum of a Geometric Progression — Anne Bauval, Nov 23 '22 at 19:07
On the tenth day, you earn 5.12 dollars. In the first ten days, you would earn $.01+.02+\ldots+5.12=10.23$. — user469053, Nov 23 '22 at 19:09
(-1) Less than 40 seconds of effort before claiming you can't understand... The duplicate should allow you to realize that $\sum_{k=1}^{10}2^{k-1}=2^{10}-1=1023.$ — Anne Bauval, Nov 23 '22 at 19:10
You have to add all the money you made during the first nine days. You are getting $5.12 because you are only considering the last day. — John Douma, Nov 23 '22 at 19:17
If you find the answer below satisfactory, then please close your inquiry by clicking the green check mark. Thank you! — RyRy the Fly Guy, Nov 26 '22 at 00:01

score 1 · Accepted Answer · answered Nov 23 '22 at 19:15

1

you must add all cents accumulated on all days

answered Nov 23 '22 at 19:15

RyRy the Fly Guy

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Is my algebra book correct?

1 Answers1