Step-by-step explanation:
1) P = 47,100 + 2,550t
Given P = 95000
So,
95000 = 47100 + 2550t
Subtract 47100 from both sides,
95000 - 47100 = 2550t
47900 = 2550t
Divide by 2550,
t = 47900/2550 = 18.78 = 18.8 years
2) Given P = 43,100 + 3,150t
Both P must be equal.
47100+2550t = 43100+3150t
Subtract 43100 and 2550t from sides,
47100- 43100 = 3150t - 2550t
4000 = 600t
Divide by 600,
t = 4000/600 = 6.67 = 6.7 years
