Answer:x + 12y = 4
9x + y = 10
-9x + y = -7
Step-by-step explanation:idk for sure tho man
Answer:
discount:deduct an amount from (the usual price of something).
tip:give (someone) a sum of money as a reward for a service
markup:the amount added to the cost price of goods to cover overheads and profit.
Sales tax:a tax on sales or on the receipts from sales
Substitute the values 15, 18, and 31 into the equation.
A(15)= -26
A(18)= -32
A(31)= -58
Answer:
Step-by-step explanation:
Hello,
I assume that you mean 
Replace x by 10
thanks
Answer:
point D
Step-by-step explanation:
moving 270 degrees clockwise from point R would result in the point being in quadrant I
point D is the only point in quadrant I
