Answer:
10
Step-by-step explanation:
5/x = 4/8
Cross multiply
4*x = 5*8
4x = 40
x = 10
Answer is 10
You are correct
The cost of the 6 books if you buy the set is $11.75 less.
The given parameters:
- <em>Total number of books, n = 6</em>
- <em>Cost of the books, c = $241.25</em>
- <em>Cost of one book, = $38.25</em>
The total cost of the 6 books when bought separately is calculated as follows;
Cost = 6 x $38.25
Cost = $229.5
The difference in price is calculated as follows;
= $241.25 - $229.5
= $11.75
Thus, the cost of the 6 books if you buy the set is $11.75 less.
Learn more about cost price here: brainly.com/question/19104371
6 × 1,000 = 6,000
2 × 10 = 20
3 × 1/10 = 3/10 = 0.3
5 × 1/1,000 = 5/1,000 = 0.005
6 × 1,000 + 2 × 10 + 3 × 1/10 + 5 × 1/1,000 = 6,020.305
f(3) = 1
substitute x = 3 into f(x)
f(3) = (2 × 3) - 5 = 6 - 5 = 1
