Answer:
$3.90
Step-by-step explanation:
1.95(2)
= $3.90
a)a^4 + 19a^2 -12ab - 3b^4 +6b...
21.6
Step by step
4,5 miles
In 1 hour: 18/3 = 6 miles
6 . 3/4 = 18/4 = 4,5 miles