Write an Equation to Describe the Variation $t$
A) $\mathrm { rs } ^ { 2 } \mathrm { t } ^ { 3 } = \mathrm { k }$

question 30

Multiple Choice

Write an equation to describe the variation. Use k for the constant of proportionality.
-r varies directly as the square of s and inversely as the cube of $t$ .

• A) \(\mathrm { rs } ^ { 2 } \mathrm { t } ^ { 3 } = \mathrm { k }\)
• B) \(r = \frac { k s ^ { 2 } } { t ^ { 3 } }\)
• C) \(r + s ^ { 2 } - t ^ { 3 } = k\)
• D) \(r = \frac { k t ^ { 3 } } { s ^ { 2 } }\)

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