exam Maths Puzzle Numerical Ability

show that ((( f(x)=3x-4 and g(x)=(x+4)/3 ))) are inverses

Read Solution (Total 0)

exam Other Question

A Cube shaped box fits exactly around a soccer ball with a diameter of 22.28 cm. What percent of the box is empty space? The question is: find three consecutive intengers whose sum is 11 less than 5 times the smallest of the three.

I think the equation would be x+y+z=5x-11 but how do I solve it?

Help!