Which equation(s) represents proportional relationship(s) with a constant of proportionality equal to 2? Select ALL that apply.
A. y=2x

B.−y=−2x

C.2y=x+2

D.2y=4x

E. y=2+x

F. y+2=2x+2

Taber invested money in an account where interest is compounded every year.he made no withdrawals or deposits. the function a(t)=525(1+0.05)^t represent the amount of money in the account after t years. how much money did taber origanally invested?