Evaluate each expression 5(2+4)-(2+3^3)

On a piece of paper graph f(x)=5•(0.4)^x

Which function in vertex form is equivalent to f(x) = x2 + 6x + 3? f(x) = (x + 3)2 + 3 f(x) = (x + 3)2 − 6 f(x) = (x + 6)2 + 3 f(x) = (x + 6)2 − 6

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.