Answer:
23.75%
Step-by-step explanation:
Use formula

where
I = interest,
P = principal,
r = rate (as decimal),
t = time (in years).
In your case,

Substitute:

9
is the correct answer when multiplying exponents with the same base, you keep the base add the exponents.
Answer:
Question incomplete.Please tell the functions.
The answer would be x=245 cm
Answer:
14.9%
Step-by-step explanation:
Using the compound interest formula;
A = P(1+r)^t
A is the amount = $2000
P is the principal = $1000
r is the rate
T is the time = 5 years
Substitute the given values into the formula;
2000 = 1000(1+r)^5
2000/1000 = (1+r)^5
2 = (1+r)^5
= 1 + r
r = 1.149 - 1
r = 0.149%
Hence the required rate is 14.9%