How do you evaluate the expression $x + 8 y$ $x+8y$ when y=7 and x=4?

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Answer 1 · 2016-11-20T20:54:36

The answer is $60$ $60$ .

Evaluate $x + 8 y$ $color(red)x+8color(limegreen)y$ when $y = 7$ $color(limegreen)y=color(limegreen)7$ and $x = 4$ $color(red)x=color(red)4$

Substitute $4$ $color(red)4$ for $x$ $color(red)x$ and $7$ $color(limegreen)7$ for $y$ $color(limegreen)y$ .

$x + 8 y = 4 + 8 (7) = 4 + 56 = 60$ $color(red)x+8color(limegreen)y=color(red)4+8(color(limegreen)7)=4+56=60$

How do you evaluate the expression x+8yx+8y when y=7 and x=4?