<span>10 nickels to 11 dimes
10 nickels to 11*2 nickels
10 nickels to 22 nickels
10 nickels: 22 nickels
10:22
5:11

</span>
Its 13 i think im not sure type it in on google..
11, 3, -3, -12
Hope this helps :)
OK so 80% of 8,200=6560
8,200-6560= 1,640
He lost 1,640
line given slope = x coefficient = 1/3
Perpendicular slopes must be opposite reciprocals of each other: m1 * m2 = –1
line slope (m) = -3
line equation formula = y = mx + b
y = -3x + b
from the point given
x = 3
y= 3
3 = -9 + b
b = 12
y = -3x + 12