I think A but I’m not for sure
Change mixed numbers to improper fractions: 9/4 + (-7/5). Adding a negative is the same as subtraction: 9/4-7/5. Find a common denominator (20) and change both fractions to have to common denominator 45/20-28/20. Then subtract numerators = 17/20. Reduce if possible, which is not in this problem.
17.50/ 1.75 = 10 gallons he bought
he already had 10 so 10 +10 =20 gallons total
he can drive 28 miles per gallon so 28*20 = 560 miles he can drive
57-8=49
So then 7y=49
Y=1 so 2y=2
-7 is the slope this is in point slope form