Question $1$

$2$ pts

Determine whether the equations are separable, linear, neither, or both.

a$.$ d $-4$xt $=7$ex

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b$.5$t $=3$et d $+$y Int

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c$.5$x dt $+6$t$2$ x $=4$ cost

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d$.3$r $=$ dr $-6$t$3$

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V