Researchers in the early learning department of a university are conducting a long-term study to see how problem-solving skills change over time as students move from elementary school to high school to college. What type of development are the researchers most likely studying?
A. cognitive
B. personality
C. social
D. physical
Answer: A
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Decide whether the statement is true or false.If a point lies on the x-axis, its x-coordinate is zero.
A. True B. False
Provide an appropriate response.Evaluate 
Fill in the blank(s) with the appropriate word(s).
Solve the problem.The population of a town is increasing by 400 inhabitants each year. If its population at the beginning of 1990 was 22,289, what was its population at the beginning of 1997?
A. 311,878 people B. 25,089 people C. 155,939 people D. 24,689 people
Translate to an algebraic expression.8 decreased by b
A. 8b B. 8 - b C. 8 + b D. b ÷ 8