Answer:
Step-by-step explanation:
-10x+18=10x+4
20x=14
x=14/20=7/10=0.7
Answer:
6
Step-by-step explanation:
60$
10 people
how much does each person bring so 60/10
$75
If the fixed cost is $15, it can be removed from the two hour charge to give the charge of ONLY two hours, which is $150.
This means the hourly charge is $150÷2, which is $75
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.