please show formulas

You have been given the following information on a call option on the stock of Puckett Industries:
	P =	$65		X =	$70
	t =	0.5		rRF=	5%
	s =	0.50
a. Using the Black-Scholes Option Pricing Model, what is the value of the call option?
First, we will use formulas from the text to solve for d1and d2.
					Hint: use the NORMSDIST function.
	(d1)	=		N(d1) =
	(d2)	=		N(d2) =
Using the formula for option value and the values of N(d) from above, we can find the call option value.
	VC	=

b. Suppose there is a put option on Puckett's stock with exactly the same inputs as the call option. What is the value of the put?

Put option using Black-Scholes modified formula

=

Put option using put-call parity

=