Algebra 2 expressions

Question

In the following expression, both A and B are variables that can take positive values.2\sqrt(A)-(B)/(5)

2√A - B/5

Which of these actions will cause the expression's value to increase?

Choose 2 answers:

(Choice A)

Keeping A constant and increasing B

(Choice B)

B

Keeping A constant and decreasing B

(Choice C)

C

Increasing A and keeping B constant

(Choice D)

D

Decreasing A and keeping B constant

Answer 1

Keeping A constant and decreasing B causes B/5 to decrease. As a result, 2/√A - B/5 increases.

Keeping B constant and decreasing A causes 2/√A to increase. So, 2/√A - B/5 increases.

ANSWER: choices b and d