To win the annual read-a-thon at his school, Dominic has to read more books than any of
his classmates over winter break. He starts by reading a lot of sports books. Then, he reads
10 mystery books. In all, Dominic reads 23 books for the read-a-thon.
4) Which equation can you use to find the number of sports books n Dominic reads?
10n = 23
n
n+ 10 = 23
= 23
10
n-10 = 23
Solve this equation for n to find the number of sports books Dominic reads.
sports books