$210 watch; 20% discount

20% = 0.20

0.20 x 210 = $42

$42 discount

210 - 42 = 168

Your total amount you would pay would be $168. The discount is $48.

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c