Answer:
vertical angles b= 86
Step-by-step explanation:
b is equal to 86 since the angles are vertical angles
7x + 15 = 1520
It’s $7 times the unknown number of shirts (x). Plus $15 to ship. All has to equal the total of $1,520.
X-3y=-5
-(x+3y=1)
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-6y=-6
y=1
x=-2
Add the 3 item totals, then divide that number by 100, then, take that number and multiply by 9 (this gets the tax total). then you are going to want to add the total of the 3 items, and the tax amount, and you have your answer. do this with all the peoples items :)