Can anyone answer this in easy way

A rate of change is a rate that describes how one quantity changes in relation to another quantity. The rate of change is 401 or 40. This means a vehicle is traveling at a rate of 40 miles per hour.

Step-by-step explanation:

The calculation for ROC is simple in that it takes the current value of a stock or index and divides it by the value from an earlier period. Subtract one and multiply the resulting number by 100 to give it a percentage representation.

I hope that made sense and helped a little, blessings!

b. 2

step-by-step explanation:

the slope of a line =δy/δx

δy= y₂-y₁

δx= x₂-x₁

therefore, using the points (-2,-3)   and (3,7) we can calculate gradient as follows:

m=(7--3)/(3--2) (a number minus a negative number the sign changes to a plus)

m=(7+10)/(3+2)

=10/5

=2

4.6875 pounds

step-by-step explanation: