Determine analytically (without using a graph) whether the function is one-to-one.f(x) = -8x + 5
A. one-to-one
B. not one-to-one
Answer: A
Mathematics
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Evaluate the integral.
dt
A. 3 ln
+ 
+ C
B. 4 ln
- 
+ C
C. 3 ln
- 
+ C
D. 3 ln
- 
+ C
Mathematics
Express the given expression in simplest form with only positive exponents.(2xy)-5
A. 
B. 
C. 
D. 32x5y5
Mathematics
Simplify. Assume that all variables represent positive real numbers.6
- 2
- 
A. 3x
B. 4x
C. 17x
D. 18x
Mathematics
Find the expected value.A fair coin is tossed three times, and a player wins $3 if 3 tails occur, wins $2 if 2 tails occur and loses $3 if no tails occur. If one tail occurs, no one wins. What is the expected value of the games?
A. $0.75 B. $2.00 C. -$3.00 D. $3.00
Mathematics