If 25% more than a number is 325 what is 20% less than the number

Determine the required value of the missing probability to make the distribution a discrete probability distribution. x p(x) 3 0.23 4 ? 5 0.51 6 0.08 p(4) = nothing  (type an integer or a decimal.)

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?

Find the average rate of change for the given function drom x=1 to x=2