Dead leaves accumulate on the ground in a forest at a rate of 3 grams per square centimeter per year. at the same time, these leaves decompose at a continuous rate of 85 percent per year. a. write a differential equation for the total quantity q of dead leaves (per square centimeter) at time t:

How do you write something in scientific notation?

An animal shelter spends $4.00 per day to care for each bird and $6.50 per day to care for each cat. olivia noticed that the shelter spent $212.00 caring for birds and cats on thursday. olivia found a record showing that there were a total of 38 birds and cats on thursday. how many birds were at the shelter on thursday?

Susan and bethany are training for a half marathon. susan trains at a rate of 3 miles every half hour, and bethany trains at a rate of 5 miles every 45 minutes. what is the unit rate, in miles per hour for each runner? who trains at a faster rate