Answer:
1. Decay of 51%
2. Growth of 51%
3. Decay of 49%
4. Growth of 49%
Explanation:
Look at the number in the parentheses raised to the power t.
In the formula, you have (1 + r)^t.
The number in parentheses is 1 + r.
Set each number in parentheses equal to 1 + r and solve for r.
If r is positive, it is growth.
If r is negative, it is decay.
1.
1 + r = 0.49
r = 0.49 - 1
r = -0.51
Decay of 51%
2.
1 + r = 1.51
r = 1.51 - 1
r = 0.51
Growth of 51%
3.
1 + r = 0.51
r = 0.51 - 1
r = -0.49
Decay of 49%
4.
1 + r = 1.49
r = 1.49 - 1
r = 0.49
Growth of 49%