How do you evaluate $30a - 8*3 + 4$ for a = 4.6?

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Answer 1 · 2015-06-24T12:27:36

$color(green)(118$

Substituting $a=4.6$ in the expression gives us:

$30*4.6 -8*3 + 4$

Using the PEMDAS rule, we multiply first, and then add/subtract

$= 138 - 24 + 4$

$= 114+4$

$=color(green)(118$

How do you evaluate 30a - 8*3 + 430a - 8*3 + 4 for a = 4.6?