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anonymous
 5 years ago
y= 7r + 4 , solve r , if y = 32 ? show your work
anonymous
 5 years ago
y= 7r + 4 , solve r , if y = 32 ? show your work

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0First, plug 32 in the place of y, you get: \[32=7r+4 ... (1)\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Can you rewrite your equation with r in terms of y? Then just plug in the y value you are given.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Now, you should try to isolate r in one side.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So to get rid of the 4, subtract 4 from both sides, you get: \[324=7r+44 \implies 28=7r\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Now, divide both sides by 7, you get: \[{28 \over 7}={7r \over 7} \implies 4=r\] So r is equal to 4.
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