Find the inverse of the function.f(x) = 
A. f-1(x) = 
- 4 for x ? 0
B. f-1(x) = 
for x ? 0
C. f-1(x) = 
D. f-1(x) = 
for x ? 0
Answer: D
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.As Thomas's income rose over the last 20 years so has his stress level.
A. Positive correlation; coincidence B. Positive correlation; direct cause C. Positive correlation; common underlying cause D. Negative correlation; common underlying cause
Decide whether the statement is compound. I'll go to Mexico or Costa Rica for my next vacation.
A. Compound B. Not compound
Solve the problem.A bank teller has some five-dollar bills and some twenty-dollar bills. The teller has 5 more of the twenties. The total value of the money is $750. Find the number of five-dollar bills that the teller has.
A. 21 five-dollar bills B. 36 five-dollar bills C. 26 five-dollar bills D. 31 five-dollar bills
Find the indicated matrix.Let A = 
and B = 
. Find AB.
A. 
B. not defined
C. 
D. 