SOLUTION: Please Help!!! Thanks x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled?

Question 203246This question is from textbook
: Please Help!!! Thanks
x varies directly as the square of s and inversely as t. How does x change when s is doubled? When both s and t are doubled? This question is from textbook

Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
Given So you can see that x varies directly with s^2 and inversely with t.
How does x change when s is doubled?
doubling s means "the new value for s is now 2 times the original s ... so use 2s

compare to and see that =

thus doubling s, makes x 4 times larger (makes sense since 2^2 = 4)

When both s and t are doubled?

compare to and see that =

thus doubling both s and t, doubles x

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