Match the data to the graph with the closest correlation coefficient.
A. r ? 0.04
B. r ? 0.87
C. r ? 0.97
D. r ? -0.99
Answer: A
Mathematics
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Determine if the given function y = f(x) is a solution of the accompanying differential equation.y' = - y2y = 
A. Yes B. No
Mathematics
Solve the problem.Sue is going to invest some money at simple interest at the rate of 4%. How long will it take for the investment to double?
A. 300 years B. 12.5 years C. 25 years D. Impossible. Not enough information
Mathematics
Multiply. Do not simplify.
? 
A. 
B. 
C. 
D. 
Mathematics
For the given amounts A and B, find the requested percent of change. Round to the nearest whole percent if necessary.A = $1.80, B = $2.50
Find the percent change if B changes to A.
A. 14% B. 28% C. -28% D. -14%
Mathematics