Answer:
Xavier has 5 dollars
Step-by-step explanation:
2x represents how much money Alex had, the -3 is how much he spent, and the 7 is how much he has now

Add 3 to both sides

divide both sides by 2

Checking my work:

We know that angle 101 and its interior angle next to it will equal 180 because it's a straight line.
180-101= 79 degrees
Find 3rd angle of triangle.
180= 38+79+y
180= 117+y
Subtract 117 from both sides
63= y
That is the interior angle by x. X plus 63 also equal a line, or 180 degrees.
180= 63+ x
Subtract 63 from both sides
117= x
Hope this helps! :)
Answer:
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