Martin deposits $200 in a savings account that earns 5% annual interest. four years later, cary deposits $200 in an account earn

Question

2 years ago

5

Martin deposits $200 in a savings account that earns 5% annual interest. four years later, cary deposits $200 in an account earn

ing the same interest. let m represent the balance in martin’s account and let c represent the amount of money in cary’s account. choose the pair of expressions that describe the accounts y years after martin opened his account. martin: 200(1.05)y cary: 200(1.05)y+4 martin: 200(1.05)y+4 cary: 200(1.05)y–4 martin: 200(0.05)y cary: 200(0.05)y–4 martin: 200(1.05)y cary: 200(1.05)y–4

Mathematics

2 answers:

Scrat [10] · Answer 1 · 2022-05-27T07:52:57+03:00

Martin deposits $200 in a savings account that earns 5% annual interest.

year interest balance

1 200 * 5% 200(1.05)

2 200(1.05) * 5% 200(1.05)^2

3 200(1.05)^2*5% 200(1.05)^3

y 200(1.05)^y

=> m = 200 (1.05)^y

four years later, cary deposits $200 in an account earning the same interest.


year interest balance

5 200 * 5% 200(1.05)

6 200(1.05) * 5% 200(1.05)^2

7 200(1.05)^2*5% 200(1.05)^3

y 200(1.05)^(y-4)

=> c = 200(1.05)^ (y-4)

Answer:
Martin: 200(1.05)^y
Cary: 200(1.05)^(y–4)

Pepsi [2] · Answer 2 · 2022-05-27T09:08:10+03:00

Pepsi [2]2 years ago

3 0

Answer:

the answer to the second question is M = 1.22C

Step-by-step explanation:

edg2020