Answer:
The annuity is worth $4100.20 today and if we increase the rate of return, from 7% to 8% the value of the annuity falls to $3992.71.
Step-by-step explanation:
The step by step solution for the given problem is attached with the image.
The value of annuity will decrease if we increase the rate of return, from 7% to 8%. Future cash flows are discounted using the rate of return, and the higher the discount rate, the lower the present value of the future cash flows.