I think the answer is 300000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
Answer: D, 9 + 7(n-1)
Step-by-step explanation: the 9 represents his first trip so it goes as the first number, and 7 is for the 7th trip! I did this question and got it right:)
30% = 3/10 = .3
70 x .3 = 21
33 minutes because 56 plus 10 equals 66 divided by 2 equals 33