Actually I think it may be C
8 x 1 = 8
8 x 1/2 = 4
8+4 =12
therefore, 8 x 1 1/2 = 12
Answer: A
Step-by-step explanation: -2 is your y-int and if you do your rise over run it’s -1/2
The seller marks up the price by $500, for a grand total of $10,500
A=27.18
There is a photo showing the answer and the formula and stuff hope this helps