Add/Subtract:

Simplify and state the domain.
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Add/Subtract, simplified:

Picture below is simplified / evaluated

Step-by-step explanation for the domain:

Find the domain by finding where the expression is defined.

Interval Notation:

(−∞,0)∪(0,7)∪(7,∞)

Set-Builder Notation:

{x|x≠0,7}

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.

47.28 or 47.2857143

step-by-step explanation:

you just divide 331 by 7 and you get that answer. ( i think so tho)