Need help with 55-56 plz

55.
1 * 10^4 = 10,000
3 * 10^3 = 3,000
10,000/3,000 = 3.333
Answer: B
56.
At the beginning, the month was month zero. x = 0
y = 213.73 * 0 + 75.62
y = 75.62
He started with $75.62.
Each month that passes he has $213.73 more money in his account.