What is the value of the function f(x) = 3(4 − x) when x = 7? 33 9 –9 –21

Quick translate "x is 12 units from 20" into an equation. what are the values of x being described? if you can answer any of my other questions that'd be great too

George has seven boxes of five pencils. giulio three boxes of eight pencils. one of the boys arranges all his pencils equally into two groups. was this george or giulio how many are in each group explain

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.