Answer:
5(8x+6y) & 10(4x+3y) & 2(20x+15y)
Step-by-step explanation:
the first doesn't include y, the third is too large, the fifth has y in the multiplier.
the only left are the fourth and second and sixth.
a. -7 + 3
b. draw 7 negatives + 7 positives
$112
7% for each year = $28
7% for four years = $28.4= $112
= 8.94 miles;
