A perpetuity pays &290 per year and interest rates are 6.6 percent. How much would it’s value change if interest rates increased to 8.1 percent?

If you need an equation, it would be y=2x+8, y would be how long it grew, x being weeks.if you need how long he was asleep, it would be 4 weeks if he started with no beard, the equation would be x=8÷2if he did have a beard before hand, the equation would be 2w+x=8