Which expression yields a different value of P from the other three?

P = $100[(P/F,i,4) + (P/F,i,5) + (P/F,i,6) + (P/F,i,7)]

P = $100[(P/A,i,7) - (P/A,i,3)]

P = $100(F/A,i,4)(P/F,i,7)

P = $100(P/A,i,4)(P/F,i,4)

At an interest rate of 9%, what value of C makes a cash flow of $50 in years 1 & 2 plus $85 in years 3 & 4 equivalent to a cash flow of C in years 1 & 4 plus 2C in years 2 & 3?

$40.38

$38.76

$52.25

$43.96

What is the equivalent present worth at Year 0 of end of year cash flows at varying interest rates of 5% and $1000 for year 1, 8% and $1500 for year 2, 10% and $1000 for year 3, and 6% and $1000 for year 4?

$3,985

$2,987

$4,021

$3,833