Answer:
$1.20
Step-by-step explanation:
A dime is worth 10¢.
10¢ x 12 = 120¢
Since a dollar is 100¢, James would have a dollar and 20¢ left over. So, $1.20.
Well 6^2 is 36 so my best estimate is 6
21 blocks, because if he uses 38 you subtract 17 and you get 21