What is the inverse of function h(x)=5/2x+4?
h-1(x)=

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 ?

Evaluate cos2θ for cosθ = square root of 3/2

Which expression converts 45 degree to radians