Answer:
(2a−1)(2a−1)
Step-by-step explanation:
Factor 4a2−4a+1
4a2−4a+1
=(2a−1)(2a−1)
Katie has read 32%, so 32%=80 pages. To get the total number of pages, you have to divide 32 and 80 by 8 to get 4% and 10 pages. 4% of the book is 10 pages, and in order to get 100%, you have to multiply by 25(4*25=100) on both sides. Remember, what you do to one side, you do to the other side. That leaves you with 100% and 250 pages. The book is 250 pages long. If she has read 80 pages, you subtract 80 from 250 to find how many pages she has left to read. The difference is 170. Katie has 170 pages left to read.
Two interpolate you need two points.
Then you assume that there is a linear correlation between those points and so you can derive the value of mid point.
You have a table with median sale prices of single family homes sold for the years from 1975 to 1995.
In this case you have to use the median sale price of single family homes sold at two years: 1994 and 1995.
You assume that the prices of the table are for the end of the year, then the price sold in June 1995 is right in the middle of the sold price in1994 and 1995.
So, the interpolation will give to [price in 1994 + price 1995] / 2 = [140,400 + 141,400] / 2 = 140,900
Answer: 140,900
