Oh. It's rounding. So, for example, depending what you were told to round to, the second problem would be 760-330=430
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Which expression has a value that is equivalent to 5n+13 when n=-15? n^2+13x
Ten cakes costs $2.19 (pounds, but I don't have a pounds symbol on my computer) because if you divide $2.10 by seven you get $0.3, and if you add 3×0.3 (because we have seven, and we need to add three more to get ten) we get $0.9.
0.9+2.10=2.19
If you are doing any scientific notation to the negative power the answer will be a decimal. In this case you will move the decimal point four places to the left.
The answer will be 0.0002077
