Which problem represents the compare, difference unknown structure?
A) Maryann had 3 library books before she checked out 2 more. How many did she have all together?
B) Maryann had 5 library books before she returned 2 of them. How many does she have now?
C) Maryann had 4 nonfiction books and 2 fiction. How many books does she have?
D) Maryann had 9 library books and Jim had 4. How many more did Maryann have than Jim?
Answer: D
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Most viruses like those described in the accompanying figure are harmless pranks that cause no permanent damage 
a. True
b. False
Mr. King runs a tight ship in his middle school math classes. At the beginning of each class, he gives a 10-minute explanation of a new concept or procedure, and then he hands out worksheets that students complete independently at their desks
Which one of the following students has a temperament that is probably the best match with Mr. King's classroom? a. Grant loves risk and adventure. b. Donna is cheerful and outgoing. c. Fiona is always full of energy. d. Jayson is quiet and diligent.
Apraxia is the inability to make a voluntary movement in spite of being able to demonstrate normal muscle function
Indicate whether the statement is true or false
The theory based on family members’ impact on one another in a bidirectional way in order to strive and maintain equilibrium is ______.
a. family member theory b. family systems theory c. divergent family theory d. systems theory