Using the order of operations, what should be done first to evaluate 62 +10-(-5) (3) -5? O Subtract 5 from 3.
Divide 10 by -5.
Add 6 and 10.
Evaluate
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Step-by-step explanation:

Well there are 2 things you can do first.

You can multiply -5 * 3    (which is not a choice)

or you can evaluate 6^2 (which is given -- so this is what you can do first)

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.