Simplify the expression.(
+ 
)(
- 
)
A. 
+ 
- 
- 13
B. 
+ 
+ 
- 13
C. 
+ 
- 
+ 13
D. 
+ 
+ 
+ 13
Answer: A
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Solve the problem.Find (fg)(4) when f(x) = x + 1 and g(x) = -5x2 + 20x - 3.
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Solve the problem.Suppose that the cost, p, of shipping a 3-pound parcel depends on the distance shipped, x, according to the function p(x) depicted in the graph. Is p continuous at 
at 
at 
at 
A. Yes; no; no; no B. Yes; no; yes; no C. No; no; yes; no D. Yes; yes; yes; no
Perform the indicated operations. Write the result using a radical. Assume that all variables represent positive values.
? 
A. 
B. 
C. 
D. 