WORTH 18 POINTS please i need an answer

Use scientific notation to estimate the number of inches in 1,225 miles. Include all calculations in your final answer.

1 inch ≈ 1.578 × 10 -5 miles.

Ineed i been stuck on this question since yesterday

Meghan has created a diagram of her city with her house, school, store, and gym identified. a. how far is it from the gym to the store? b. meghan also wants to walk to get some exercise, rather than going to the gym. she decides to walk along arc ab. how far will she walk? round to 3 decimal places.

Ian is in training for a national hot dog eating contest on the 4th of july. on his first day of training, he eats 4 hot dogs. each day, he plans to eat 110% of the number of hot dogs he ate the previous day. write an explicit formula that could be used to find the number of hot dogs ian will eat on any particular day.