The answer would be $56
The reason is you would do 80*.3(30% in decimal form) which would equal 24
24 is what is being taken off of the normal cost.
So you would then do 80-24 which would equal $56.
Answer:
Sam would receive 17 boxes of books.
Step-by-step explanation:
Given:
Books ordered by Sam this week is given as:
120 books on Monday
286 books on Wednesday
To find the number of boxes Sam received if there are 24 books in each box.
Solution:
Total books ordered by Sam this week = 
The total number of books is packed in boxes of 24 books each and received by Sam.
Thus, total number of books must be divided by 24 to find the number of boxed Sam would receive on Friday.
Total number of boxes of Books received by Sam =
Thus, Sam would receive 17 boxes of books.
Assume that the number is n.
sum of twice the number and 15 means that you will first multiply the number by 2 then add 15.
the equation us:
2n + 15 = -42
2n = -42-15
2n = -57
n = -28.5