Find the perimeter of △DEF if △DEF~△CBF,
the perimeter of △CBF
is 27, DF=6,
and FC=8.
Express your answer as a decimal, if necessary.

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

True or false look at the picture pls : /