The mileage is 27.6 mi/gal
Miles driven = 552.4 mi
Calculate gallons used.

Answer: 20.015 gallons (approximately 20 gallons)
I don’t understand you second question but this is the work for the first one.
Hope it helps!
The answer is C and here are the steps
Answer: the answer is 1000years of death!!!
Step-by-step explanation:
Answer:
1. r+s²=49
2. pq²=24
3. -4xy-6x²+2x²y-6y= -54
Step-by-step explanation:
1. r+s²=0+7²=49
2. pq²=(6)(2)²=6(4)=24
3. -4xy-6x²+2x²y-6y= -4(3)(2)-6(3)²+2(3)²(2)-6(2)
= -24-6(9)+2(9)(2)-12
= -24-54+36-12
= -78+36-12
= -42-12
= -54