What does rate of change mean? List 2 to 4 bullets below for BRAINLIEST ANSWER NEEDED ASAP

A rate of change is a rate that describes how one quantity changes in relation to another quantity.

Step-by-step explanation: Hope this help

It tells us the average speed. For instance, if you move 10 meters in 4 seconds, then the average rate of change is 10/4 = 2.5 meters per second. This could apply to moving from one location to another.

It could also be used to describe how much work you can get done over time.  For example, let's say you paint 5 square meters of a wall per hour. This is the speed at which you get the job done. After 1 hour, you've painted 5 square meters of wall. After 2 hours, you've painted 2*5 = 10 square meters, and so on.

Another example could be how a population is changing. If there are 100 animals at time 5 hours, then the population becomes 200 animals at time 10 hours, then the rate of change is (200-100)/(10-5) = 100/2 = 50 animals per hour. In other words, the population is going up by 50 animals for every hour.

Step-by-step explanation:

if t varies inversely proportional as r, then,

t ∞ 1/r

t = k.1/r

t = k/r

substitute t =6 and r = 5 into the equation above

6 = k/5

k = 5 x 6 = 30

the equation that represents this variation is given by,

t =30/r

tr = 30

when r =15,

t = 30/15

t =2