1. What is the percent mark-up if the action figure cost $.07 to make and was sold for $2.99? 2. What is the percent decrease if a shirt originally sold for $27.50 but was on sale for $20.00?

3. What is the percent growth of a 6-year old growing from 39 inches to 44 inches in the course of a year?

What is the value of x when x + 7 = 21?

Plz.yesterday, the snow was 2 feet deep in front of archie’s house. today, the snow depth dropped to 1.6 feet because the day is so warm. what is the percent change in the depth of the snow?

Ascientist places 24 cells in a petri dish. she knows the cells grow at an exponential rate, doubling in number every hour. how long will it take (in hours) for there to be 1100 cells in the dish? time to 1100 cells: 5.51832530 hours how long will it take to reach 110 cells? time to 110 cells : 2.1963972 hours what is the average rate of change in the number of cells between 9 hours and 11 hours? average rate of change: cells per hour what is the instantaneous rate of change after 7 hours? instantaneous rate of change: cells per hour note: you can earn partial credit on this problem.