Since the order of the books chosen doesn't matter, we use the combination formula to find the number of possible selections. Recall that a combination of k items from a set of n items is given by

.
In this problem, n = 8 and k = 3. So the number of possible selections is

. Thus the answer is 56.
X=r-s/t
1.(S+tx)+(-s)=r+(-s)
2.s+tx-s=r-s
3.s-s+tx=r-s
4.tx=r-s
5.tx/t=r-s/t
6. x=r-s/t
Answer:
0.333333333
i cant explain how i got that answer i just dived
Answer:
Step-by-step explanation:
S = Monthly Sales
Monthly Wage = $2500 + 7% of monthly sales
Monthly Wage = $2500 + (0.07)S