21. A $15 000 investment earns 14.25% interest, compounded semi-annually. Approximately how long will it take for the investment to double in value? а. 20 years b. 10 years с. 5 уears d. 7 years
21. A $15 000 investment earns 14.25% interest, compounded semi-annually. Approximately how long will it take for the investment to double in value? а. 20 years b. 10 years с. 5 уears d. 7 years
Chapter5: Exponential And Logarithmic Functions
Section: Chapter Questions
Problem 37CT: On the day a grandchild is born, a grandparent deposits $2500 in a fund earning 7.5% interest,...
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this only multiple questions I need the right answer for 21 thank you
Transcribed Image Text:19. Solve the equation 1 + log(2x – 3) = 1log(3x - 2).
28
X =
17
a.
с.
17
1
11
b.
d.
3
4
20. Solve the equation log, (x - 9x+ 18)- log, (x- 3) = 2.
x= 1
d. x= 22
a. x= 16
с.
b. x= 10
21. A $15 000 investment earns 14.25% interest, compounded semi-annually. Approximately how long will it
take for the investment to double in value?
а. 20 years
b. 10 years
с. 5 years
d. 7 years
C.
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