Write forty-seven thousandths in standard form

Which of the following situations represents a linear relationship? a. theresa increases the distance she runs by 0.1 miles every week. b. the volume of a box depends on the length of box. c. the amount of money in a bank account increases by 1 percent each year. d. the population of a town doubles every 5 years.

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Can someone check if i did this correct. it’s number 4 if you’re wondering.