Solve.A psychologist administers four different tests and then graphs the number of minutes it takes for her patient to complete each test. Determine how many more minutes were needed for the patient to complete Test 4 than to complete Test 3.
A. 10 minutes
B. 30 minutes
C. 20 minutes
D. 40 minutes
Answer: D
Mathematics
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A. - 
+ 
B. 
+ 
C. 
- 
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A. Yes B. No
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?
?
A. ?
B. ?
C. ?
D. ?
E. ?
Mathematics