Use regression to solve the problem. Round numbers to the nearest hundredth.The first column shows the independent variable (x). The second column shows the dependent variable (y).
Find the quadratic regression model.
A. y = -0.02x2 + 2.90 x + 3.70
B. y = -0.01x2 + 3.80 x + 3.20
C. y = -0.02x2 + 3.20 x + 3.20
D. y = -0.01x2 + 3.20 x + 3.70
Answer: D
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Condense the expression
to the logarithm of a single term.
a. 
b. 
c. 
d. 
e. 
Use the distributive property. Assume that variables represent nonnegative values.
(
- 2
)
A. 
- 4
B. 
+ 2
C. 
- 2
D. 
+ 4
Use translations of one of the basic functions defined by y = x2, y = x3, y = 
, or y = 
to sketch a graph of y = f(x) by hand. Do not use a calculator.y = x3 + 2
A. 
B. 
C. 
D. 
Solve the problem.The Paperback Trader is a book store that takes in used paperbacks for 20% of their cover price and sells them for 50% of their cover price. Pat brings in a stack of 16 paperback books to trade and gets $17.50 credit. Some of the books had a cover price of $7.97, the rest $3.97. She wants to get some Tom Clancy books having a cover price of $7.97. How many $7.97 books did she bring in and how many Clancy books can she get without paying any additional cash?
A. 6 $7.97 books, 2 Clancy books B. 6 $7.97 books, 5 Clancy books C. 6 $7.97 books, 4 Clancy books D. 10 $7.97 books, 2 Clancy books