SOLUTION: Please help, it asks: x varies directly as the square of s and inversly as t. How does x change when s is doubled? When both s and t are doubled? Please help me, thank You=)

Question 136295: Please help, it asks: x varies directly as the square of s and inversly as t. How does x change when s is doubled? When both s and t are doubled?
Please help me, thank You=)
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
" x varies directly as the square of s"
__ "How does x change when s is doubled?" __ (2s)^2=4s^2 __ so doubling s quadruples x

"inversly as t" __ x changes in the opposite way of t __ t larger, x smaller and vice versa
__ so doubling t, halves x

"When both s and t are doubled?" __ quadrupled by s and halved by t __ 4*(1/2)=2, so x is doubled
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