Match each item with the correct unit price. 1. 20 for $1.56
78 cents each
2. $3.78 for 6
7.8 cents each
1
3. 2 for one dollar
2.
$1.05 each
4. 5 at $3.90
40 cents each
5. 1- for $1.58
2
63 cents each

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.