It is given in the question that
Emily has $950 and her troop has 10 times as much as Emily did. And we have to find how many money did Emily's troop raise.
And to find the money, Emily's troop raised, we have to find the 10 times of 950 . And for that we have to multiply 10 and 950 . THat is
So when Emily raised $950 , then Emily's troops have raised the money to $9500 .