The answer is: x = -1, y = +4
Subtract to find the amount of tax paid:
1890 - 1800 = 90
Divide the amount of tax by the price of the computer:
90 / 1800 = 0.05
Multiply the decimal by 100:
0.05 x 100 = 5%
The tax rate is 5%
He sold 12 coins, 16+28+32+4=80. 15% of 80 is 12
Answer:
6
Step-by-step explanation:
.....ur welcome.........
