Answer: a. 320 books
Step-by-step explanation:
Given : The total number of books were placed on the discount shelf for 70% off the regular price = 960
The fraction of books sold = 
Then, the number of books sold = 
Now, the number of books remain on the discount shelf = 
Hence, the number of books remain on the discount shelf =320
Answer:
400
Step-by-step explanation:
240 is 60% of 400. That means that 400 people are in the class hope this helps.
Answer:
(2,3)
Step-by-step explanation:
The solution to a linear set of equations is the (x,y) point that satisfies both equations.
When you graph the equations, like in this picture, that means the intersection of the two lines.
Answer:
98.64
Step-by-step explanation:
To find invers
1. solve for y
2. replace y with xinverse
so
x=4-4y+y^2
reorder right side
x=y^2-4y+4
factor right side
x=(y-2)^2
squaer root both sides
+/-√x=y-2
add 2 to both sides
2+/-√x=y
switch x and y
2+/-√y=xinverse
xinverse=2+√y or 2-√y
subtract 4 from both sides
