Provide an Appropriate Answer $\frac { \partial \mathrm { w } } { \partial \mathrm { r } }$

question 138

Multiple Choice

Provide an appropriate answer.
-Find $\frac { \partial \mathrm { w } } { \partial \mathrm { r } }$ when $\mathrm { r } = 5$ and $\mathrm { s } = - 2$ if $\mathrm { w } ( \mathrm { x } , \mathrm { y } , \mathrm { z } ) = \mathrm { xz } + \mathrm { y } ^ { \wedge } 2 , \mathrm { x } = 3 \mathrm { r } + 7 , \mathrm { y } = \mathrm { r } + \mathrm { s }$ , and $\mathrm { z } = \mathrm { r } - \mathrm { s }$

• A) \(\frac { \partial w } { \partial r } = 49\)
• B) \(\frac { \partial w } { \partial r } = 25\)
• C) \(\frac { \partial w } { \partial r } = 21\)
• D) \(\frac { \partial w } { \partial r } = 39\)

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