(Rolated to Checkpolnt 5.6) (Solving for f) Speingfield Learning sold zero coupon bands (bonds that doeit pay any interest, instead the bondholder gats just one payment, coming when The bond matures, from the issuar) and recoived $1,200 for each bond that will pay $18.000 when it matures in 35 years. a. At what rate is Springliold Leaming borrawing the money from investars? b. It Nancy Muntz purchased a bond at the ollering for $1,200 and sold it 15 years later for the market peice of $3,100, what annual rale of return fid she tarn? c. If Barney Gumble purchased Muntz's bond at the macket peice ($3,100) and heid 120 years unst maturity, what annual rate of retum would he have earred? a. At what rate is Springfeld Leaming borrowing the money from investors? 8.04% (Round to two decimal places.) b. If Nanky Muntz purchased a bond at the offering for $1,200 and sold it 15 years later for the market price of FVn. what annual mate of retum did she eam? (Round to two decinal places.)