B. Investment
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Answer:
Checking for students' understanding of a concept by asking them to apply the concept to other contexts.
Explanation:
Concept formation is an inductive teaching technique that enhance discovery learning and helps to get clear understanding of a concept in pupils by using psychological processes such as observation, analysis, hypothesis, generation and testing a small set of the concepts.
Mr. Lui utilized the strategy of checking for students' understanding of a concept by asking them to apply the concept to other contexts in his homework assignment.
Answer:
He can buy both 3 ( number of ) Products A and B .
Explanation:
Suppose the no of product A bought is x and the number of product B purchased is y .
Then Total Cost would be 4x+ 5y= 27 ----eq 1
As he wants to buy both products he can divide the money equally
1:1.
As the individual cost would be $4 + $5 = $ 9
Putting symbols for cost x+ y= 9----- eq 2
Dividing the total cost by the individual cost would give ( eq1 by eq2)
4x+ 5y/ x+ y= 27/9
4x+ 5y/ x+y= 3
4x + 5y= 3(x+y)
but as 4x + 5y = 27 ( already given)
27= 3 ( x+y)
Meaning 3 number of both products can be purchased.
Check .
4(3) + 5(3)= 27
$ 12+ $ 15= $27