Simplify.-9 + 11 - (-4) + 16
A. -8
B. 14
C. 22
D. -10
Answer: C
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Provide an appropriate response.
How many people were 20 years old or older?
A. 29 people B. 24 people C. 31 people D. 33 people
Perform the subtraction visually using symbols. 2 - (-1)
A. -1 B. -3 C. 1 D. 3
Solve the problem. Write ratios in lowest terms.The local middle school has 14 laptops and 40 desktops in its computer lab. The high school has 21 laptops and 60 desktops. Find the ratio of laptops to desktops for each school. Are the ratios the same or different?
A. Middle school: 
High school: 
Same
B. Middle school: 
High school: 
Different
C. Middle school: 
High school: 
Different
D. Middle school: 
High school: 
Same
Factor the polynomial as a perfect square or state that it is irreducible.49x2 - 70x + 25
A. (7x + 5)(7x - 5) B. (7x + 5)2 C. (7x - 5)2 D. (7x - 6)2