Danny is riding a Ferris wheel with radius 20 m. The wheel does a whole revolution in 10 minutes. If Danny starts at 0 m above the ground, how far above ground is he after 2.5 minutes? 10 m

40 m

30 m

20 m

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,