I think the answer is 18.8 Miles/gallons. 325.4 miles / 17.3 gallons = 18.78 miles/gallons, round it to 18.8 miles/gallons.
Answer:

Step-by-step explanation:
A is the hyp. And b/c are the sides
A²=b²+c²=3²+2²=9+4=13
Now take the square root of 13 as the answer
Check the picture below.
they're at a 3:1 ratio, thus, 3 times.
Answer:
449.65
Step-by-step explanation:
391x.15=58.65
$58.65+$391= 449.65