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6 votes
6 votes
Frank’s test score average decreased by 13 points this semester write a signed number to present this change in average

User Esaruoho
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1 Answer

8 votes
8 votes

A change will have an amount and a sign. The amount is how many it changed and the sign is positive (+) if the chenge is an increaase and is negative (-) if it is a decrease.

In this case, the amount changed is given to be 13, and it is given that this was a decrease, so it must have a negative sign.

So, the representation is:


-13

User Chinskiy
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2.8k points