21. mike deposited $700 in his savings account and it earned $39.90 in simple interest over 3 years. find the simple
interest rate on mike's savings account.
a: 1.9%
b. $837.90
c. 17%
d. 5.85%

[2, 2.5)

(2.5, 3]

step-by-step explanation:

i think its these two not sure [2, 2.5)

(2.5, 3]

explanation:

step-by-step explanation:

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like:

52 \43 i don't know this i tried